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@@ -1,1206 +1,1214 b'' | |||||
1 | # -*- coding: utf-8 -*- |
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1 | # -*- coding: utf-8 -*- | |
2 | """Top-level display functions for displaying object in different formats.""" |
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2 | """Top-level display functions for displaying object in different formats.""" | |
3 |
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3 | |||
4 | # Copyright (c) IPython Development Team. |
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4 | # Copyright (c) IPython Development Team. | |
5 | # Distributed under the terms of the Modified BSD License. |
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5 | # Distributed under the terms of the Modified BSD License. | |
6 |
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6 | |||
7 |
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7 | |||
8 | from binascii import b2a_base64, hexlify |
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8 | from binascii import b2a_base64, hexlify | |
9 | import json |
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9 | import json | |
10 | import mimetypes |
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10 | import mimetypes | |
11 | import os |
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11 | import os | |
12 | import struct |
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12 | import struct | |
13 | import warnings |
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13 | import warnings | |
14 | from copy import deepcopy |
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14 | from copy import deepcopy | |
15 | from os.path import splitext |
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15 | from os.path import splitext | |
16 | from pathlib import Path, PurePath |
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16 | from pathlib import Path, PurePath | |
17 |
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17 | |||
18 | from IPython.utils.py3compat import cast_unicode |
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18 | from IPython.utils.py3compat import cast_unicode | |
19 | from IPython.testing.skipdoctest import skip_doctest |
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19 | from IPython.testing.skipdoctest import skip_doctest | |
20 | from . import display_functions |
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20 | from . import display_functions | |
21 |
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21 | |||
22 |
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22 | |||
23 | __all__ = ['display_pretty', 'display_html', 'display_markdown', |
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23 | __all__ = ['display_pretty', 'display_html', 'display_markdown', | |
24 | 'display_svg', 'display_png', 'display_jpeg', 'display_latex', 'display_json', |
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24 | 'display_svg', 'display_png', 'display_jpeg', 'display_latex', 'display_json', | |
25 | 'display_javascript', 'display_pdf', 'DisplayObject', 'TextDisplayObject', |
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25 | 'display_javascript', 'display_pdf', 'DisplayObject', 'TextDisplayObject', | |
26 | 'Pretty', 'HTML', 'Markdown', 'Math', 'Latex', 'SVG', 'ProgressBar', 'JSON', |
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26 | 'Pretty', 'HTML', 'Markdown', 'Math', 'Latex', 'SVG', 'ProgressBar', 'JSON', | |
27 | 'GeoJSON', 'Javascript', 'Image', 'set_matplotlib_formats', |
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27 | 'GeoJSON', 'Javascript', 'Image', 'set_matplotlib_formats', | |
28 | 'set_matplotlib_close', |
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28 | 'set_matplotlib_close', | |
29 | 'Video'] |
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29 | 'Video'] | |
30 |
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30 | |||
31 | _deprecated_names = ["display", "clear_output", "publish_display_data", "update_display", "DisplayHandle"] |
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31 | _deprecated_names = ["display", "clear_output", "publish_display_data", "update_display", "DisplayHandle"] | |
32 |
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32 | |||
33 | __all__ = __all__ + _deprecated_names |
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33 | __all__ = __all__ + _deprecated_names | |
34 |
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34 | |||
35 |
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35 | |||
36 | # ----- warn to import from IPython.display ----- |
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36 | # ----- warn to import from IPython.display ----- | |
37 |
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37 | |||
38 | from warnings import warn |
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38 | from warnings import warn | |
39 |
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39 | |||
40 |
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40 | |||
41 | def __getattr__(name): |
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41 | def __getattr__(name): | |
42 | if name in _deprecated_names: |
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42 | if name in _deprecated_names: | |
43 | warn(f"Importing {name} from IPython.core.display is deprecated since IPython 7.14, please import from IPython display", DeprecationWarning, stacklevel=2) |
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43 | warn(f"Importing {name} from IPython.core.display is deprecated since IPython 7.14, please import from IPython display", DeprecationWarning, stacklevel=2) | |
44 | return getattr(display_functions, name) |
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44 | return getattr(display_functions, name) | |
45 |
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45 | |||
46 | if name in globals().keys(): |
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46 | if name in globals().keys(): | |
47 | return globals()[name] |
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47 | return globals()[name] | |
48 | else: |
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48 | else: | |
49 | raise AttributeError(f"module {__name__} has no attribute {name}") |
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49 | raise AttributeError(f"module {__name__} has no attribute {name}") | |
50 |
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50 | |||
51 |
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51 | |||
52 | #----------------------------------------------------------------------------- |
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52 | #----------------------------------------------------------------------------- | |
53 | # utility functions |
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53 | # utility functions | |
54 | #----------------------------------------------------------------------------- |
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54 | #----------------------------------------------------------------------------- | |
55 |
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55 | |||
56 | def _safe_exists(path): |
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56 | def _safe_exists(path): | |
57 | """Check path, but don't let exceptions raise""" |
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57 | """Check path, but don't let exceptions raise""" | |
58 | try: |
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58 | try: | |
59 | return os.path.exists(path) |
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59 | return os.path.exists(path) | |
60 | except Exception: |
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60 | except Exception: | |
61 | return False |
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61 | return False | |
62 |
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62 | |||
63 |
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63 | |||
64 | def _display_mimetype(mimetype, objs, raw=False, metadata=None): |
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64 | def _display_mimetype(mimetype, objs, raw=False, metadata=None): | |
65 | """internal implementation of all display_foo methods |
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65 | """internal implementation of all display_foo methods | |
66 |
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66 | |||
67 | Parameters |
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67 | Parameters | |
68 | ---------- |
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68 | ---------- | |
69 | mimetype : str |
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69 | mimetype : str | |
70 | The mimetype to be published (e.g. 'image/png') |
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70 | The mimetype to be published (e.g. 'image/png') | |
71 | *objs : object |
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71 | *objs : object | |
72 | The Python objects to display, or if raw=True raw text data to |
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72 | The Python objects to display, or if raw=True raw text data to | |
73 | display. |
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73 | display. | |
74 | raw : bool |
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74 | raw : bool | |
75 | Are the data objects raw data or Python objects that need to be |
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75 | Are the data objects raw data or Python objects that need to be | |
76 | formatted before display? [default: False] |
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76 | formatted before display? [default: False] | |
77 | metadata : dict (optional) |
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77 | metadata : dict (optional) | |
78 | Metadata to be associated with the specific mimetype output. |
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78 | Metadata to be associated with the specific mimetype output. | |
79 | """ |
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79 | """ | |
80 | if metadata: |
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80 | if metadata: | |
81 | metadata = {mimetype: metadata} |
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81 | metadata = {mimetype: metadata} | |
82 | if raw: |
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82 | if raw: | |
83 | # turn list of pngdata into list of { 'image/png': pngdata } |
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83 | # turn list of pngdata into list of { 'image/png': pngdata } | |
84 | objs = [ {mimetype: obj} for obj in objs ] |
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84 | objs = [ {mimetype: obj} for obj in objs ] | |
85 | display(*objs, raw=raw, metadata=metadata, include=[mimetype]) |
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85 | display(*objs, raw=raw, metadata=metadata, include=[mimetype]) | |
86 |
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86 | |||
87 | #----------------------------------------------------------------------------- |
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87 | #----------------------------------------------------------------------------- | |
88 | # Main functions |
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88 | # Main functions | |
89 | #----------------------------------------------------------------------------- |
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89 | #----------------------------------------------------------------------------- | |
90 |
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90 | |||
91 |
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91 | |||
92 | def display_pretty(*objs, **kwargs): |
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92 | def display_pretty(*objs, **kwargs): | |
93 | """Display the pretty (default) representation of an object. |
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93 | """Display the pretty (default) representation of an object. | |
94 |
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94 | |||
95 | Parameters |
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95 | Parameters | |
96 | ---------- |
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96 | ---------- | |
97 | *objs : object |
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97 | *objs : object | |
98 | The Python objects to display, or if raw=True raw text data to |
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98 | The Python objects to display, or if raw=True raw text data to | |
99 | display. |
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99 | display. | |
100 | raw : bool |
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100 | raw : bool | |
101 | Are the data objects raw data or Python objects that need to be |
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101 | Are the data objects raw data or Python objects that need to be | |
102 | formatted before display? [default: False] |
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102 | formatted before display? [default: False] | |
103 | metadata : dict (optional) |
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103 | metadata : dict (optional) | |
104 | Metadata to be associated with the specific mimetype output. |
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104 | Metadata to be associated with the specific mimetype output. | |
105 | """ |
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105 | """ | |
106 | _display_mimetype('text/plain', objs, **kwargs) |
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106 | _display_mimetype('text/plain', objs, **kwargs) | |
107 |
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107 | |||
108 |
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108 | |||
109 | def display_html(*objs, **kwargs): |
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109 | def display_html(*objs, **kwargs): | |
110 | """Display the HTML representation of an object. |
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110 | """Display the HTML representation of an object. | |
111 |
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111 | |||
112 | Note: If raw=False and the object does not have a HTML |
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112 | Note: If raw=False and the object does not have a HTML | |
113 | representation, no HTML will be shown. |
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113 | representation, no HTML will be shown. | |
114 |
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114 | |||
115 | Parameters |
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115 | Parameters | |
116 | ---------- |
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116 | ---------- | |
117 | *objs : object |
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117 | *objs : object | |
118 | The Python objects to display, or if raw=True raw HTML data to |
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118 | The Python objects to display, or if raw=True raw HTML data to | |
119 | display. |
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119 | display. | |
120 | raw : bool |
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120 | raw : bool | |
121 | Are the data objects raw data or Python objects that need to be |
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121 | Are the data objects raw data or Python objects that need to be | |
122 | formatted before display? [default: False] |
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122 | formatted before display? [default: False] | |
123 | metadata : dict (optional) |
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123 | metadata : dict (optional) | |
124 | Metadata to be associated with the specific mimetype output. |
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124 | Metadata to be associated with the specific mimetype output. | |
125 | """ |
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125 | """ | |
126 | _display_mimetype('text/html', objs, **kwargs) |
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126 | _display_mimetype('text/html', objs, **kwargs) | |
127 |
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127 | |||
128 |
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128 | |||
129 | def display_markdown(*objs, **kwargs): |
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129 | def display_markdown(*objs, **kwargs): | |
130 | """Displays the Markdown representation of an object. |
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130 | """Displays the Markdown representation of an object. | |
131 |
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131 | |||
132 | Parameters |
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132 | Parameters | |
133 | ---------- |
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133 | ---------- | |
134 | *objs : object |
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134 | *objs : object | |
135 | The Python objects to display, or if raw=True raw markdown data to |
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135 | The Python objects to display, or if raw=True raw markdown data to | |
136 | display. |
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136 | display. | |
137 | raw : bool |
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137 | raw : bool | |
138 | Are the data objects raw data or Python objects that need to be |
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138 | Are the data objects raw data or Python objects that need to be | |
139 | formatted before display? [default: False] |
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139 | formatted before display? [default: False] | |
140 | metadata : dict (optional) |
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140 | metadata : dict (optional) | |
141 | Metadata to be associated with the specific mimetype output. |
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141 | Metadata to be associated with the specific mimetype output. | |
142 | """ |
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142 | """ | |
143 |
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143 | |||
144 | _display_mimetype('text/markdown', objs, **kwargs) |
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144 | _display_mimetype('text/markdown', objs, **kwargs) | |
145 |
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145 | |||
146 |
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146 | |||
147 | def display_svg(*objs, **kwargs): |
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147 | def display_svg(*objs, **kwargs): | |
148 | """Display the SVG representation of an object. |
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148 | """Display the SVG representation of an object. | |
149 |
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149 | |||
150 | Parameters |
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150 | Parameters | |
151 | ---------- |
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151 | ---------- | |
152 | *objs : object |
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152 | *objs : object | |
153 | The Python objects to display, or if raw=True raw svg data to |
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153 | The Python objects to display, or if raw=True raw svg data to | |
154 | display. |
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154 | display. | |
155 | raw : bool |
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155 | raw : bool | |
156 | Are the data objects raw data or Python objects that need to be |
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156 | Are the data objects raw data or Python objects that need to be | |
157 | formatted before display? [default: False] |
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157 | formatted before display? [default: False] | |
158 | metadata : dict (optional) |
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158 | metadata : dict (optional) | |
159 | Metadata to be associated with the specific mimetype output. |
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159 | Metadata to be associated with the specific mimetype output. | |
160 | """ |
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160 | """ | |
161 | _display_mimetype('image/svg+xml', objs, **kwargs) |
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161 | _display_mimetype('image/svg+xml', objs, **kwargs) | |
162 |
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162 | |||
163 |
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163 | |||
164 | def display_png(*objs, **kwargs): |
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164 | def display_png(*objs, **kwargs): | |
165 | """Display the PNG representation of an object. |
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165 | """Display the PNG representation of an object. | |
166 |
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166 | |||
167 | Parameters |
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167 | Parameters | |
168 | ---------- |
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168 | ---------- | |
169 | *objs : object |
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169 | *objs : object | |
170 | The Python objects to display, or if raw=True raw png data to |
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170 | The Python objects to display, or if raw=True raw png data to | |
171 | display. |
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171 | display. | |
172 | raw : bool |
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172 | raw : bool | |
173 | Are the data objects raw data or Python objects that need to be |
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173 | Are the data objects raw data or Python objects that need to be | |
174 | formatted before display? [default: False] |
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174 | formatted before display? [default: False] | |
175 | metadata : dict (optional) |
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175 | metadata : dict (optional) | |
176 | Metadata to be associated with the specific mimetype output. |
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176 | Metadata to be associated with the specific mimetype output. | |
177 | """ |
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177 | """ | |
178 | _display_mimetype('image/png', objs, **kwargs) |
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178 | _display_mimetype('image/png', objs, **kwargs) | |
179 |
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179 | |||
180 |
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180 | |||
181 | def display_jpeg(*objs, **kwargs): |
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181 | def display_jpeg(*objs, **kwargs): | |
182 | """Display the JPEG representation of an object. |
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182 | """Display the JPEG representation of an object. | |
183 |
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183 | |||
184 | Parameters |
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184 | Parameters | |
185 | ---------- |
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185 | ---------- | |
186 | *objs : object |
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186 | *objs : object | |
187 | The Python objects to display, or if raw=True raw JPEG data to |
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187 | The Python objects to display, or if raw=True raw JPEG data to | |
188 | display. |
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188 | display. | |
189 | raw : bool |
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189 | raw : bool | |
190 | Are the data objects raw data or Python objects that need to be |
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190 | Are the data objects raw data or Python objects that need to be | |
191 | formatted before display? [default: False] |
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191 | formatted before display? [default: False] | |
192 | metadata : dict (optional) |
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192 | metadata : dict (optional) | |
193 | Metadata to be associated with the specific mimetype output. |
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193 | Metadata to be associated with the specific mimetype output. | |
194 | """ |
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194 | """ | |
195 | _display_mimetype('image/jpeg', objs, **kwargs) |
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195 | _display_mimetype('image/jpeg', objs, **kwargs) | |
196 |
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196 | |||
197 |
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197 | |||
198 | def display_latex(*objs, **kwargs): |
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198 | def display_latex(*objs, **kwargs): | |
199 | """Display the LaTeX representation of an object. |
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199 | """Display the LaTeX representation of an object. | |
200 |
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200 | |||
201 | Parameters |
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201 | Parameters | |
202 | ---------- |
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202 | ---------- | |
203 | *objs : object |
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203 | *objs : object | |
204 | The Python objects to display, or if raw=True raw latex data to |
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204 | The Python objects to display, or if raw=True raw latex data to | |
205 | display. |
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205 | display. | |
206 | raw : bool |
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206 | raw : bool | |
207 | Are the data objects raw data or Python objects that need to be |
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207 | Are the data objects raw data or Python objects that need to be | |
208 | formatted before display? [default: False] |
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208 | formatted before display? [default: False] | |
209 | metadata : dict (optional) |
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209 | metadata : dict (optional) | |
210 | Metadata to be associated with the specific mimetype output. |
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210 | Metadata to be associated with the specific mimetype output. | |
211 | """ |
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211 | """ | |
212 | _display_mimetype('text/latex', objs, **kwargs) |
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212 | _display_mimetype('text/latex', objs, **kwargs) | |
213 |
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213 | |||
214 |
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214 | |||
215 | def display_json(*objs, **kwargs): |
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215 | def display_json(*objs, **kwargs): | |
216 | """Display the JSON representation of an object. |
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216 | """Display the JSON representation of an object. | |
217 |
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217 | |||
218 | Note that not many frontends support displaying JSON. |
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218 | Note that not many frontends support displaying JSON. | |
219 |
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219 | |||
220 | Parameters |
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220 | Parameters | |
221 | ---------- |
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221 | ---------- | |
222 | *objs : object |
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222 | *objs : object | |
223 | The Python objects to display, or if raw=True raw json data to |
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223 | The Python objects to display, or if raw=True raw json data to | |
224 | display. |
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224 | display. | |
225 | raw : bool |
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225 | raw : bool | |
226 | Are the data objects raw data or Python objects that need to be |
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226 | Are the data objects raw data or Python objects that need to be | |
227 | formatted before display? [default: False] |
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227 | formatted before display? [default: False] | |
228 | metadata : dict (optional) |
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228 | metadata : dict (optional) | |
229 | Metadata to be associated with the specific mimetype output. |
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229 | Metadata to be associated with the specific mimetype output. | |
230 | """ |
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230 | """ | |
231 | _display_mimetype('application/json', objs, **kwargs) |
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231 | _display_mimetype('application/json', objs, **kwargs) | |
232 |
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232 | |||
233 |
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233 | |||
234 | def display_javascript(*objs, **kwargs): |
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234 | def display_javascript(*objs, **kwargs): | |
235 | """Display the Javascript representation of an object. |
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235 | """Display the Javascript representation of an object. | |
236 |
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236 | |||
237 | Parameters |
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237 | Parameters | |
238 | ---------- |
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238 | ---------- | |
239 | *objs : object |
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239 | *objs : object | |
240 | The Python objects to display, or if raw=True raw javascript data to |
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240 | The Python objects to display, or if raw=True raw javascript data to | |
241 | display. |
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241 | display. | |
242 | raw : bool |
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242 | raw : bool | |
243 | Are the data objects raw data or Python objects that need to be |
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243 | Are the data objects raw data or Python objects that need to be | |
244 | formatted before display? [default: False] |
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244 | formatted before display? [default: False] | |
245 | metadata : dict (optional) |
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245 | metadata : dict (optional) | |
246 | Metadata to be associated with the specific mimetype output. |
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246 | Metadata to be associated with the specific mimetype output. | |
247 | """ |
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247 | """ | |
248 | _display_mimetype('application/javascript', objs, **kwargs) |
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248 | _display_mimetype('application/javascript', objs, **kwargs) | |
249 |
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249 | |||
250 |
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250 | |||
251 | def display_pdf(*objs, **kwargs): |
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251 | def display_pdf(*objs, **kwargs): | |
252 | """Display the PDF representation of an object. |
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252 | """Display the PDF representation of an object. | |
253 |
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253 | |||
254 | Parameters |
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254 | Parameters | |
255 | ---------- |
|
255 | ---------- | |
256 | *objs : object |
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256 | *objs : object | |
257 | The Python objects to display, or if raw=True raw javascript data to |
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257 | The Python objects to display, or if raw=True raw javascript data to | |
258 | display. |
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258 | display. | |
259 | raw : bool |
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259 | raw : bool | |
260 | Are the data objects raw data or Python objects that need to be |
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260 | Are the data objects raw data or Python objects that need to be | |
261 | formatted before display? [default: False] |
|
261 | formatted before display? [default: False] | |
262 | metadata : dict (optional) |
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262 | metadata : dict (optional) | |
263 | Metadata to be associated with the specific mimetype output. |
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263 | Metadata to be associated with the specific mimetype output. | |
264 | """ |
|
264 | """ | |
265 | _display_mimetype('application/pdf', objs, **kwargs) |
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265 | _display_mimetype('application/pdf', objs, **kwargs) | |
266 |
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266 | |||
267 |
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267 | |||
268 | #----------------------------------------------------------------------------- |
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268 | #----------------------------------------------------------------------------- | |
269 | # Smart classes |
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269 | # Smart classes | |
270 | #----------------------------------------------------------------------------- |
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270 | #----------------------------------------------------------------------------- | |
271 |
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271 | |||
272 |
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272 | |||
273 | class DisplayObject(object): |
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273 | class DisplayObject(object): | |
274 | """An object that wraps data to be displayed.""" |
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274 | """An object that wraps data to be displayed.""" | |
275 |
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275 | |||
276 | _read_flags = 'r' |
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276 | _read_flags = 'r' | |
277 | _show_mem_addr = False |
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277 | _show_mem_addr = False | |
278 | metadata = None |
|
278 | metadata = None | |
279 |
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279 | |||
280 | def __init__(self, data=None, url=None, filename=None, metadata=None): |
|
280 | def __init__(self, data=None, url=None, filename=None, metadata=None): | |
281 | """Create a display object given raw data. |
|
281 | """Create a display object given raw data. | |
282 |
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282 | |||
283 | When this object is returned by an expression or passed to the |
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283 | When this object is returned by an expression or passed to the | |
284 | display function, it will result in the data being displayed |
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284 | display function, it will result in the data being displayed | |
285 | in the frontend. The MIME type of the data should match the |
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285 | in the frontend. The MIME type of the data should match the | |
286 | subclasses used, so the Png subclass should be used for 'image/png' |
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286 | subclasses used, so the Png subclass should be used for 'image/png' | |
287 | data. If the data is a URL, the data will first be downloaded |
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287 | data. If the data is a URL, the data will first be downloaded | |
288 | and then displayed. If |
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288 | and then displayed. If | |
289 |
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289 | |||
290 | Parameters |
|
290 | Parameters | |
291 | ---------- |
|
291 | ---------- | |
292 | data : unicode, str or bytes |
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292 | data : unicode, str or bytes | |
293 | The raw data or a URL or file to load the data from |
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293 | The raw data or a URL or file to load the data from | |
294 | url : unicode |
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294 | url : unicode | |
295 | A URL to download the data from. |
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295 | A URL to download the data from. | |
296 | filename : unicode |
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296 | filename : unicode | |
297 | Path to a local file to load the data from. |
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297 | Path to a local file to load the data from. | |
298 | metadata : dict |
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298 | metadata : dict | |
299 | Dict of metadata associated to be the object when displayed |
|
299 | Dict of metadata associated to be the object when displayed | |
300 | """ |
|
300 | """ | |
301 | if isinstance(data, (Path, PurePath)): |
|
301 | if isinstance(data, (Path, PurePath)): | |
302 | data = str(data) |
|
302 | data = str(data) | |
303 |
|
303 | |||
304 | if data is not None and isinstance(data, str): |
|
304 | if data is not None and isinstance(data, str): | |
305 | if data.startswith('http') and url is None: |
|
305 | if data.startswith('http') and url is None: | |
306 | url = data |
|
306 | url = data | |
307 | filename = None |
|
307 | filename = None | |
308 | data = None |
|
308 | data = None | |
309 | elif _safe_exists(data) and filename is None: |
|
309 | elif _safe_exists(data) and filename is None: | |
310 | url = None |
|
310 | url = None | |
311 | filename = data |
|
311 | filename = data | |
312 | data = None |
|
312 | data = None | |
313 |
|
313 | |||
314 | self.url = url |
|
314 | self.url = url | |
315 | self.filename = filename |
|
315 | self.filename = filename | |
316 | # because of @data.setter methods in |
|
316 | # because of @data.setter methods in | |
317 | # subclasses ensure url and filename are set |
|
317 | # subclasses ensure url and filename are set | |
318 | # before assigning to self.data |
|
318 | # before assigning to self.data | |
319 | self.data = data |
|
319 | self.data = data | |
320 |
|
320 | |||
321 | if metadata is not None: |
|
321 | if metadata is not None: | |
322 | self.metadata = metadata |
|
322 | self.metadata = metadata | |
323 | elif self.metadata is None: |
|
323 | elif self.metadata is None: | |
324 | self.metadata = {} |
|
324 | self.metadata = {} | |
325 |
|
325 | |||
326 | self.reload() |
|
326 | self.reload() | |
327 | self._check_data() |
|
327 | self._check_data() | |
328 |
|
328 | |||
329 | def __repr__(self): |
|
329 | def __repr__(self): | |
330 | if not self._show_mem_addr: |
|
330 | if not self._show_mem_addr: | |
331 | cls = self.__class__ |
|
331 | cls = self.__class__ | |
332 | r = "<%s.%s object>" % (cls.__module__, cls.__name__) |
|
332 | r = "<%s.%s object>" % (cls.__module__, cls.__name__) | |
333 | else: |
|
333 | else: | |
334 | r = super(DisplayObject, self).__repr__() |
|
334 | r = super(DisplayObject, self).__repr__() | |
335 | return r |
|
335 | return r | |
336 |
|
336 | |||
337 | def _check_data(self): |
|
337 | def _check_data(self): | |
338 | """Override in subclasses if there's something to check.""" |
|
338 | """Override in subclasses if there's something to check.""" | |
339 | pass |
|
339 | pass | |
340 |
|
340 | |||
341 | def _data_and_metadata(self): |
|
341 | def _data_and_metadata(self): | |
342 | """shortcut for returning metadata with shape information, if defined""" |
|
342 | """shortcut for returning metadata with shape information, if defined""" | |
343 | if self.metadata: |
|
343 | if self.metadata: | |
344 | return self.data, deepcopy(self.metadata) |
|
344 | return self.data, deepcopy(self.metadata) | |
345 | else: |
|
345 | else: | |
346 | return self.data |
|
346 | return self.data | |
347 |
|
347 | |||
348 | def reload(self): |
|
348 | def reload(self): | |
349 | """Reload the raw data from file or URL.""" |
|
349 | """Reload the raw data from file or URL.""" | |
350 | if self.filename is not None: |
|
350 | if self.filename is not None: | |
351 | with open(self.filename, self._read_flags) as f: |
|
351 | with open(self.filename, self._read_flags) as f: | |
352 | self.data = f.read() |
|
352 | self.data = f.read() | |
353 | elif self.url is not None: |
|
353 | elif self.url is not None: | |
354 | # Deferred import |
|
354 | # Deferred import | |
355 | from urllib.request import urlopen |
|
355 | from urllib.request import urlopen | |
356 | response = urlopen(self.url) |
|
356 | response = urlopen(self.url) | |
357 | data = response.read() |
|
357 | data = response.read() | |
358 | # extract encoding from header, if there is one: |
|
358 | # extract encoding from header, if there is one: | |
359 | encoding = None |
|
359 | encoding = None | |
360 | if 'content-type' in response.headers: |
|
360 | if 'content-type' in response.headers: | |
361 | for sub in response.headers['content-type'].split(';'): |
|
361 | for sub in response.headers['content-type'].split(';'): | |
362 | sub = sub.strip() |
|
362 | sub = sub.strip() | |
363 | if sub.startswith('charset'): |
|
363 | if sub.startswith('charset'): | |
364 | encoding = sub.split('=')[-1].strip() |
|
364 | encoding = sub.split('=')[-1].strip() | |
365 | break |
|
365 | break | |
366 | if 'content-encoding' in response.headers: |
|
366 | if 'content-encoding' in response.headers: | |
367 | # TODO: do deflate? |
|
367 | # TODO: do deflate? | |
368 | if 'gzip' in response.headers['content-encoding']: |
|
368 | if 'gzip' in response.headers['content-encoding']: | |
369 | import gzip |
|
369 | import gzip | |
370 | from io import BytesIO |
|
370 | from io import BytesIO | |
371 | with gzip.open(BytesIO(data), 'rt', encoding=encoding) as fp: |
|
371 | with gzip.open(BytesIO(data), 'rt', encoding=encoding) as fp: | |
372 | encoding = None |
|
372 | encoding = None | |
373 | data = fp.read() |
|
373 | data = fp.read() | |
374 |
|
374 | |||
375 | # decode data, if an encoding was specified |
|
375 | # decode data, if an encoding was specified | |
376 | # We only touch self.data once since |
|
376 | # We only touch self.data once since | |
377 | # subclasses such as SVG have @data.setter methods |
|
377 | # subclasses such as SVG have @data.setter methods | |
378 | # that transform self.data into ... well svg. |
|
378 | # that transform self.data into ... well svg. | |
379 | if encoding: |
|
379 | if encoding: | |
380 | self.data = data.decode(encoding, 'replace') |
|
380 | self.data = data.decode(encoding, 'replace') | |
381 | else: |
|
381 | else: | |
382 | self.data = data |
|
382 | self.data = data | |
383 |
|
383 | |||
384 |
|
384 | |||
385 | class TextDisplayObject(DisplayObject): |
|
385 | class TextDisplayObject(DisplayObject): | |
386 | """Validate that display data is text""" |
|
386 | """Validate that display data is text""" | |
387 | def _check_data(self): |
|
387 | def _check_data(self): | |
388 | if self.data is not None and not isinstance(self.data, str): |
|
388 | if self.data is not None and not isinstance(self.data, str): | |
389 | raise TypeError("%s expects text, not %r" % (self.__class__.__name__, self.data)) |
|
389 | raise TypeError("%s expects text, not %r" % (self.__class__.__name__, self.data)) | |
390 |
|
390 | |||
391 | class Pretty(TextDisplayObject): |
|
391 | class Pretty(TextDisplayObject): | |
392 |
|
392 | |||
393 | def _repr_pretty_(self, pp, cycle): |
|
393 | def _repr_pretty_(self, pp, cycle): | |
394 | return pp.text(self.data) |
|
394 | return pp.text(self.data) | |
395 |
|
395 | |||
396 |
|
396 | |||
397 | class HTML(TextDisplayObject): |
|
397 | class HTML(TextDisplayObject): | |
398 |
|
398 | |||
399 | def __init__(self, data=None, url=None, filename=None, metadata=None): |
|
399 | def __init__(self, data=None, url=None, filename=None, metadata=None): | |
400 | def warn(): |
|
400 | def warn(): | |
401 | if not data: |
|
401 | if not data: | |
402 | return False |
|
402 | return False | |
403 |
|
403 | |||
404 | # |
|
404 | # | |
405 | # Avoid calling lower() on the entire data, because it could be a |
|
405 | # Avoid calling lower() on the entire data, because it could be a | |
406 | # long string and we're only interested in its beginning and end. |
|
406 | # long string and we're only interested in its beginning and end. | |
407 | # |
|
407 | # | |
408 | prefix = data[:10].lower() |
|
408 | prefix = data[:10].lower() | |
409 | suffix = data[-10:].lower() |
|
409 | suffix = data[-10:].lower() | |
410 | return prefix.startswith("<iframe ") and suffix.endswith("</iframe>") |
|
410 | return prefix.startswith("<iframe ") and suffix.endswith("</iframe>") | |
411 |
|
411 | |||
412 | if warn(): |
|
412 | if warn(): | |
413 | warnings.warn("Consider using IPython.display.IFrame instead") |
|
413 | warnings.warn("Consider using IPython.display.IFrame instead") | |
414 | super(HTML, self).__init__(data=data, url=url, filename=filename, metadata=metadata) |
|
414 | super(HTML, self).__init__(data=data, url=url, filename=filename, metadata=metadata) | |
415 |
|
415 | |||
416 | def _repr_html_(self): |
|
416 | def _repr_html_(self): | |
417 | return self._data_and_metadata() |
|
417 | return self._data_and_metadata() | |
418 |
|
418 | |||
419 | def __html__(self): |
|
419 | def __html__(self): | |
420 | """ |
|
420 | """ | |
421 | This method exists to inform other HTML-using modules (e.g. Markupsafe, |
|
421 | This method exists to inform other HTML-using modules (e.g. Markupsafe, | |
422 | htmltag, etc) that this object is HTML and does not need things like |
|
422 | htmltag, etc) that this object is HTML and does not need things like | |
423 | special characters (<>&) escaped. |
|
423 | special characters (<>&) escaped. | |
424 | """ |
|
424 | """ | |
425 | return self._repr_html_() |
|
425 | return self._repr_html_() | |
426 |
|
426 | |||
427 |
|
427 | |||
428 | class Markdown(TextDisplayObject): |
|
428 | class Markdown(TextDisplayObject): | |
429 |
|
429 | |||
430 | def _repr_markdown_(self): |
|
430 | def _repr_markdown_(self): | |
431 | return self._data_and_metadata() |
|
431 | return self._data_and_metadata() | |
432 |
|
432 | |||
433 |
|
433 | |||
434 | class Math(TextDisplayObject): |
|
434 | class Math(TextDisplayObject): | |
435 |
|
435 | |||
436 | def _repr_latex_(self): |
|
436 | def _repr_latex_(self): | |
437 | s = r"$\displaystyle %s$" % self.data.strip('$') |
|
437 | s = r"$\displaystyle %s$" % self.data.strip('$') | |
438 | if self.metadata: |
|
438 | if self.metadata: | |
439 | return s, deepcopy(self.metadata) |
|
439 | return s, deepcopy(self.metadata) | |
440 | else: |
|
440 | else: | |
441 | return s |
|
441 | return s | |
442 |
|
442 | |||
443 |
|
443 | |||
444 | class Latex(TextDisplayObject): |
|
444 | class Latex(TextDisplayObject): | |
445 |
|
445 | |||
446 | def _repr_latex_(self): |
|
446 | def _repr_latex_(self): | |
447 | return self._data_and_metadata() |
|
447 | return self._data_and_metadata() | |
448 |
|
448 | |||
449 |
|
449 | |||
450 | class SVG(DisplayObject): |
|
450 | class SVG(DisplayObject): | |
451 | """Embed an SVG into the display. |
|
451 | """Embed an SVG into the display. | |
452 |
|
452 | |||
453 | Note if you just want to view a svg image via a URL use `:class:Image` with |
|
453 | Note if you just want to view a svg image via a URL use `:class:Image` with | |
454 | a url=URL keyword argument. |
|
454 | a url=URL keyword argument. | |
455 | """ |
|
455 | """ | |
456 |
|
456 | |||
457 | _read_flags = 'rb' |
|
457 | _read_flags = 'rb' | |
458 | # wrap data in a property, which extracts the <svg> tag, discarding |
|
458 | # wrap data in a property, which extracts the <svg> tag, discarding | |
459 | # document headers |
|
459 | # document headers | |
460 | _data = None |
|
460 | _data = None | |
461 |
|
461 | |||
462 | @property |
|
462 | @property | |
463 | def data(self): |
|
463 | def data(self): | |
464 | return self._data |
|
464 | return self._data | |
465 |
|
465 | |||
466 | @data.setter |
|
466 | @data.setter | |
467 | def data(self, svg): |
|
467 | def data(self, svg): | |
468 | if svg is None: |
|
468 | if svg is None: | |
469 | self._data = None |
|
469 | self._data = None | |
470 | return |
|
470 | return | |
471 | # parse into dom object |
|
471 | # parse into dom object | |
472 | from xml.dom import minidom |
|
472 | from xml.dom import minidom | |
473 | x = minidom.parseString(svg) |
|
473 | x = minidom.parseString(svg) | |
474 | # get svg tag (should be 1) |
|
474 | # get svg tag (should be 1) | |
475 | found_svg = x.getElementsByTagName('svg') |
|
475 | found_svg = x.getElementsByTagName('svg') | |
476 | if found_svg: |
|
476 | if found_svg: | |
477 | svg = found_svg[0].toxml() |
|
477 | svg = found_svg[0].toxml() | |
478 | else: |
|
478 | else: | |
479 | # fallback on the input, trust the user |
|
479 | # fallback on the input, trust the user | |
480 | # but this is probably an error. |
|
480 | # but this is probably an error. | |
481 | pass |
|
481 | pass | |
482 | svg = cast_unicode(svg) |
|
482 | svg = cast_unicode(svg) | |
483 | self._data = svg |
|
483 | self._data = svg | |
484 |
|
484 | |||
485 | def _repr_svg_(self): |
|
485 | def _repr_svg_(self): | |
486 | return self._data_and_metadata() |
|
486 | return self._data_and_metadata() | |
487 |
|
487 | |||
488 | class ProgressBar(DisplayObject): |
|
488 | class ProgressBar(DisplayObject): | |
489 | """Progressbar supports displaying a progressbar like element |
|
489 | """Progressbar supports displaying a progressbar like element | |
490 | """ |
|
490 | """ | |
491 | def __init__(self, total): |
|
491 | def __init__(self, total): | |
492 | """Creates a new progressbar |
|
492 | """Creates a new progressbar | |
493 |
|
493 | |||
494 | Parameters |
|
494 | Parameters | |
495 | ---------- |
|
495 | ---------- | |
496 | total : int |
|
496 | total : int | |
497 | maximum size of the progressbar |
|
497 | maximum size of the progressbar | |
498 | """ |
|
498 | """ | |
499 | self.total = total |
|
499 | self.total = total | |
500 | self._progress = 0 |
|
500 | self._progress = 0 | |
501 | self.html_width = '60ex' |
|
501 | self.html_width = '60ex' | |
502 | self.text_width = 60 |
|
502 | self.text_width = 60 | |
503 | self._display_id = hexlify(os.urandom(8)).decode('ascii') |
|
503 | self._display_id = hexlify(os.urandom(8)).decode('ascii') | |
504 |
|
504 | |||
505 | def __repr__(self): |
|
505 | def __repr__(self): | |
506 | fraction = self.progress / self.total |
|
506 | fraction = self.progress / self.total | |
507 | filled = '=' * int(fraction * self.text_width) |
|
507 | filled = '=' * int(fraction * self.text_width) | |
508 | rest = ' ' * (self.text_width - len(filled)) |
|
508 | rest = ' ' * (self.text_width - len(filled)) | |
509 | return '[{}{}] {}/{}'.format( |
|
509 | return '[{}{}] {}/{}'.format( | |
510 | filled, rest, |
|
510 | filled, rest, | |
511 | self.progress, self.total, |
|
511 | self.progress, self.total, | |
512 | ) |
|
512 | ) | |
513 |
|
513 | |||
514 | def _repr_html_(self): |
|
514 | def _repr_html_(self): | |
515 | return "<progress style='width:{}' max='{}' value='{}'></progress>".format( |
|
515 | return "<progress style='width:{}' max='{}' value='{}'></progress>".format( | |
516 | self.html_width, self.total, self.progress) |
|
516 | self.html_width, self.total, self.progress) | |
517 |
|
517 | |||
518 | def display(self): |
|
518 | def display(self): | |
519 | display(self, display_id=self._display_id) |
|
519 | display(self, display_id=self._display_id) | |
520 |
|
520 | |||
521 | def update(self): |
|
521 | def update(self): | |
522 | display(self, display_id=self._display_id, update=True) |
|
522 | display(self, display_id=self._display_id, update=True) | |
523 |
|
523 | |||
524 | @property |
|
524 | @property | |
525 | def progress(self): |
|
525 | def progress(self): | |
526 | return self._progress |
|
526 | return self._progress | |
527 |
|
527 | |||
528 | @progress.setter |
|
528 | @progress.setter | |
529 | def progress(self, value): |
|
529 | def progress(self, value): | |
530 | self._progress = value |
|
530 | self._progress = value | |
531 | self.update() |
|
531 | self.update() | |
532 |
|
532 | |||
533 | def __iter__(self): |
|
533 | def __iter__(self): | |
534 | self.display() |
|
534 | self.display() | |
535 | self._progress = -1 # First iteration is 0 |
|
535 | self._progress = -1 # First iteration is 0 | |
536 | return self |
|
536 | return self | |
537 |
|
537 | |||
538 | def __next__(self): |
|
538 | def __next__(self): | |
539 | """Returns current value and increments display by one.""" |
|
539 | """Returns current value and increments display by one.""" | |
540 | self.progress += 1 |
|
540 | self.progress += 1 | |
541 | if self.progress < self.total: |
|
541 | if self.progress < self.total: | |
542 | return self.progress |
|
542 | return self.progress | |
543 | else: |
|
543 | else: | |
544 | raise StopIteration() |
|
544 | raise StopIteration() | |
545 |
|
545 | |||
546 | class JSON(DisplayObject): |
|
546 | class JSON(DisplayObject): | |
547 | """JSON expects a JSON-able dict or list |
|
547 | """JSON expects a JSON-able dict or list | |
548 |
|
548 | |||
549 | not an already-serialized JSON string. |
|
549 | not an already-serialized JSON string. | |
550 |
|
550 | |||
551 | Scalar types (None, number, string) are not allowed, only dict or list containers. |
|
551 | Scalar types (None, number, string) are not allowed, only dict or list containers. | |
552 | """ |
|
552 | """ | |
553 | # wrap data in a property, which warns about passing already-serialized JSON |
|
553 | # wrap data in a property, which warns about passing already-serialized JSON | |
554 | _data = None |
|
554 | _data = None | |
555 | def __init__(self, data=None, url=None, filename=None, expanded=False, metadata=None, root='root', **kwargs): |
|
555 | def __init__(self, data=None, url=None, filename=None, expanded=False, metadata=None, root='root', **kwargs): | |
556 | """Create a JSON display object given raw data. |
|
556 | """Create a JSON display object given raw data. | |
557 |
|
557 | |||
558 | Parameters |
|
558 | Parameters | |
559 | ---------- |
|
559 | ---------- | |
560 | data : dict or list |
|
560 | data : dict or list | |
561 | JSON data to display. Not an already-serialized JSON string. |
|
561 | JSON data to display. Not an already-serialized JSON string. | |
562 | Scalar types (None, number, string) are not allowed, only dict |
|
562 | Scalar types (None, number, string) are not allowed, only dict | |
563 | or list containers. |
|
563 | or list containers. | |
564 | url : unicode |
|
564 | url : unicode | |
565 | A URL to download the data from. |
|
565 | A URL to download the data from. | |
566 | filename : unicode |
|
566 | filename : unicode | |
567 | Path to a local file to load the data from. |
|
567 | Path to a local file to load the data from. | |
568 | expanded : boolean |
|
568 | expanded : boolean | |
569 | Metadata to control whether a JSON display component is expanded. |
|
569 | Metadata to control whether a JSON display component is expanded. | |
570 | metadata: dict |
|
570 | metadata: dict | |
571 | Specify extra metadata to attach to the json display object. |
|
571 | Specify extra metadata to attach to the json display object. | |
572 | root : str |
|
572 | root : str | |
573 | The name of the root element of the JSON tree |
|
573 | The name of the root element of the JSON tree | |
574 | """ |
|
574 | """ | |
575 | self.metadata = { |
|
575 | self.metadata = { | |
576 | 'expanded': expanded, |
|
576 | 'expanded': expanded, | |
577 | 'root': root, |
|
577 | 'root': root, | |
578 | } |
|
578 | } | |
579 | if metadata: |
|
579 | if metadata: | |
580 | self.metadata.update(metadata) |
|
580 | self.metadata.update(metadata) | |
581 | if kwargs: |
|
581 | if kwargs: | |
582 | self.metadata.update(kwargs) |
|
582 | self.metadata.update(kwargs) | |
583 | super(JSON, self).__init__(data=data, url=url, filename=filename) |
|
583 | super(JSON, self).__init__(data=data, url=url, filename=filename) | |
584 |
|
584 | |||
585 | def _check_data(self): |
|
585 | def _check_data(self): | |
586 | if self.data is not None and not isinstance(self.data, (dict, list)): |
|
586 | if self.data is not None and not isinstance(self.data, (dict, list)): | |
587 | raise TypeError("%s expects JSONable dict or list, not %r" % (self.__class__.__name__, self.data)) |
|
587 | raise TypeError("%s expects JSONable dict or list, not %r" % (self.__class__.__name__, self.data)) | |
588 |
|
588 | |||
589 | @property |
|
589 | @property | |
590 | def data(self): |
|
590 | def data(self): | |
591 | return self._data |
|
591 | return self._data | |
592 |
|
592 | |||
593 | @data.setter |
|
593 | @data.setter | |
594 | def data(self, data): |
|
594 | def data(self, data): | |
595 | if isinstance(data, (Path, PurePath)): |
|
595 | if isinstance(data, (Path, PurePath)): | |
596 | data = str(data) |
|
596 | data = str(data) | |
597 |
|
597 | |||
598 | if isinstance(data, str): |
|
598 | if isinstance(data, str): | |
599 | if self.filename is None and self.url is None: |
|
599 | if self.filename is None and self.url is None: | |
600 | warnings.warn("JSON expects JSONable dict or list, not JSON strings") |
|
600 | warnings.warn("JSON expects JSONable dict or list, not JSON strings") | |
601 | data = json.loads(data) |
|
601 | data = json.loads(data) | |
602 | self._data = data |
|
602 | self._data = data | |
603 |
|
603 | |||
604 | def _data_and_metadata(self): |
|
604 | def _data_and_metadata(self): | |
605 | return self.data, self.metadata |
|
605 | return self.data, self.metadata | |
606 |
|
606 | |||
607 | def _repr_json_(self): |
|
607 | def _repr_json_(self): | |
608 | return self._data_and_metadata() |
|
608 | return self._data_and_metadata() | |
609 |
|
609 | |||
610 | _css_t = """var link = document.createElement("link"); |
|
610 | _css_t = """var link = document.createElement("link"); | |
611 | link.ref = "stylesheet"; |
|
611 | link.ref = "stylesheet"; | |
612 | link.type = "text/css"; |
|
612 | link.type = "text/css"; | |
613 | link.href = "%s"; |
|
613 | link.href = "%s"; | |
614 | document.head.appendChild(link); |
|
614 | document.head.appendChild(link); | |
615 | """ |
|
615 | """ | |
616 |
|
616 | |||
617 | _lib_t1 = """new Promise(function(resolve, reject) { |
|
617 | _lib_t1 = """new Promise(function(resolve, reject) { | |
618 | var script = document.createElement("script"); |
|
618 | var script = document.createElement("script"); | |
619 | script.onload = resolve; |
|
619 | script.onload = resolve; | |
620 | script.onerror = reject; |
|
620 | script.onerror = reject; | |
621 | script.src = "%s"; |
|
621 | script.src = "%s"; | |
622 | document.head.appendChild(script); |
|
622 | document.head.appendChild(script); | |
623 | }).then(() => { |
|
623 | }).then(() => { | |
624 | """ |
|
624 | """ | |
625 |
|
625 | |||
626 | _lib_t2 = """ |
|
626 | _lib_t2 = """ | |
627 | });""" |
|
627 | });""" | |
628 |
|
628 | |||
629 | class GeoJSON(JSON): |
|
629 | class GeoJSON(JSON): | |
630 | """GeoJSON expects JSON-able dict |
|
630 | """GeoJSON expects JSON-able dict | |
631 |
|
631 | |||
632 | not an already-serialized JSON string. |
|
632 | not an already-serialized JSON string. | |
633 |
|
633 | |||
634 | Scalar types (None, number, string) are not allowed, only dict containers. |
|
634 | Scalar types (None, number, string) are not allowed, only dict containers. | |
635 | """ |
|
635 | """ | |
636 |
|
636 | |||
637 | def __init__(self, *args, **kwargs): |
|
637 | def __init__(self, *args, **kwargs): | |
638 | """Create a GeoJSON display object given raw data. |
|
638 | """Create a GeoJSON display object given raw data. | |
639 |
|
639 | |||
640 | Parameters |
|
640 | Parameters | |
641 | ---------- |
|
641 | ---------- | |
642 | data : dict or list |
|
642 | data : dict or list | |
643 | VegaLite data. Not an already-serialized JSON string. |
|
643 | VegaLite data. Not an already-serialized JSON string. | |
644 | Scalar types (None, number, string) are not allowed, only dict |
|
644 | Scalar types (None, number, string) are not allowed, only dict | |
645 | or list containers. |
|
645 | or list containers. | |
646 | url_template : string |
|
646 | url_template : string | |
647 | Leaflet TileLayer URL template: http://leafletjs.com/reference.html#url-template |
|
647 | Leaflet TileLayer URL template: http://leafletjs.com/reference.html#url-template | |
648 | layer_options : dict |
|
648 | layer_options : dict | |
649 | Leaflet TileLayer options: http://leafletjs.com/reference.html#tilelayer-options |
|
649 | Leaflet TileLayer options: http://leafletjs.com/reference.html#tilelayer-options | |
650 | url : unicode |
|
650 | url : unicode | |
651 | A URL to download the data from. |
|
651 | A URL to download the data from. | |
652 | filename : unicode |
|
652 | filename : unicode | |
653 | Path to a local file to load the data from. |
|
653 | Path to a local file to load the data from. | |
654 | metadata: dict |
|
654 | metadata: dict | |
655 | Specify extra metadata to attach to the json display object. |
|
655 | Specify extra metadata to attach to the json display object. | |
656 |
|
656 | |||
657 | Examples |
|
657 | Examples | |
658 | -------- |
|
658 | -------- | |
659 |
|
659 | |||
660 | The following will display an interactive map of Mars with a point of |
|
660 | The following will display an interactive map of Mars with a point of | |
661 | interest on frontend that do support GeoJSON display. |
|
661 | interest on frontend that do support GeoJSON display. | |
662 |
|
662 | |||
663 | >>> from IPython.display import GeoJSON |
|
663 | >>> from IPython.display import GeoJSON | |
664 |
|
664 | |||
665 | >>> GeoJSON(data={ |
|
665 | >>> GeoJSON(data={ | |
666 | ... "type": "Feature", |
|
666 | ... "type": "Feature", | |
667 | ... "geometry": { |
|
667 | ... "geometry": { | |
668 | ... "type": "Point", |
|
668 | ... "type": "Point", | |
669 | ... "coordinates": [-81.327, 296.038] |
|
669 | ... "coordinates": [-81.327, 296.038] | |
670 | ... } |
|
670 | ... } | |
671 | ... }, |
|
671 | ... }, | |
672 | ... url_template="http://s3-eu-west-1.amazonaws.com/whereonmars.cartodb.net/{basemap_id}/{z}/{x}/{y}.png", |
|
672 | ... url_template="http://s3-eu-west-1.amazonaws.com/whereonmars.cartodb.net/{basemap_id}/{z}/{x}/{y}.png", | |
673 | ... layer_options={ |
|
673 | ... layer_options={ | |
674 | ... "basemap_id": "celestia_mars-shaded-16k_global", |
|
674 | ... "basemap_id": "celestia_mars-shaded-16k_global", | |
675 | ... "attribution" : "Celestia/praesepe", |
|
675 | ... "attribution" : "Celestia/praesepe", | |
676 | ... "minZoom" : 0, |
|
676 | ... "minZoom" : 0, | |
677 | ... "maxZoom" : 18, |
|
677 | ... "maxZoom" : 18, | |
678 | ... }) |
|
678 | ... }) | |
679 | <IPython.core.display.GeoJSON object> |
|
679 | <IPython.core.display.GeoJSON object> | |
680 |
|
680 | |||
681 | In the terminal IPython, you will only see the text representation of |
|
681 | In the terminal IPython, you will only see the text representation of | |
682 | the GeoJSON object. |
|
682 | the GeoJSON object. | |
683 |
|
683 | |||
684 | """ |
|
684 | """ | |
685 |
|
685 | |||
686 | super(GeoJSON, self).__init__(*args, **kwargs) |
|
686 | super(GeoJSON, self).__init__(*args, **kwargs) | |
687 |
|
687 | |||
688 |
|
688 | |||
689 | def _ipython_display_(self): |
|
689 | def _ipython_display_(self): | |
690 | bundle = { |
|
690 | bundle = { | |
691 | 'application/geo+json': self.data, |
|
691 | 'application/geo+json': self.data, | |
692 | 'text/plain': '<IPython.display.GeoJSON object>' |
|
692 | 'text/plain': '<IPython.display.GeoJSON object>' | |
693 | } |
|
693 | } | |
694 | metadata = { |
|
694 | metadata = { | |
695 | 'application/geo+json': self.metadata |
|
695 | 'application/geo+json': self.metadata | |
696 | } |
|
696 | } | |
697 | display(bundle, metadata=metadata, raw=True) |
|
697 | display(bundle, metadata=metadata, raw=True) | |
698 |
|
698 | |||
699 | class Javascript(TextDisplayObject): |
|
699 | class Javascript(TextDisplayObject): | |
700 |
|
700 | |||
701 | def __init__(self, data=None, url=None, filename=None, lib=None, css=None): |
|
701 | def __init__(self, data=None, url=None, filename=None, lib=None, css=None): | |
702 | """Create a Javascript display object given raw data. |
|
702 | """Create a Javascript display object given raw data. | |
703 |
|
703 | |||
704 | When this object is returned by an expression or passed to the |
|
704 | When this object is returned by an expression or passed to the | |
705 | display function, it will result in the data being displayed |
|
705 | display function, it will result in the data being displayed | |
706 | in the frontend. If the data is a URL, the data will first be |
|
706 | in the frontend. If the data is a URL, the data will first be | |
707 | downloaded and then displayed. |
|
707 | downloaded and then displayed. | |
708 |
|
708 | |||
709 | In the Notebook, the containing element will be available as `element`, |
|
709 | In the Notebook, the containing element will be available as `element`, | |
710 | and jQuery will be available. Content appended to `element` will be |
|
710 | and jQuery will be available. Content appended to `element` will be | |
711 | visible in the output area. |
|
711 | visible in the output area. | |
712 |
|
712 | |||
713 | Parameters |
|
713 | Parameters | |
714 | ---------- |
|
714 | ---------- | |
715 | data : unicode, str or bytes |
|
715 | data : unicode, str or bytes | |
716 | The Javascript source code or a URL to download it from. |
|
716 | The Javascript source code or a URL to download it from. | |
717 | url : unicode |
|
717 | url : unicode | |
718 | A URL to download the data from. |
|
718 | A URL to download the data from. | |
719 | filename : unicode |
|
719 | filename : unicode | |
720 | Path to a local file to load the data from. |
|
720 | Path to a local file to load the data from. | |
721 | lib : list or str |
|
721 | lib : list or str | |
722 | A sequence of Javascript library URLs to load asynchronously before |
|
722 | A sequence of Javascript library URLs to load asynchronously before | |
723 | running the source code. The full URLs of the libraries should |
|
723 | running the source code. The full URLs of the libraries should | |
724 | be given. A single Javascript library URL can also be given as a |
|
724 | be given. A single Javascript library URL can also be given as a | |
725 | string. |
|
725 | string. | |
726 | css: : list or str |
|
726 | css: : list or str | |
727 | A sequence of css files to load before running the source code. |
|
727 | A sequence of css files to load before running the source code. | |
728 | The full URLs of the css files should be given. A single css URL |
|
728 | The full URLs of the css files should be given. A single css URL | |
729 | can also be given as a string. |
|
729 | can also be given as a string. | |
730 | """ |
|
730 | """ | |
731 | if isinstance(lib, str): |
|
731 | if isinstance(lib, str): | |
732 | lib = [lib] |
|
732 | lib = [lib] | |
733 | elif lib is None: |
|
733 | elif lib is None: | |
734 | lib = [] |
|
734 | lib = [] | |
735 | if isinstance(css, str): |
|
735 | if isinstance(css, str): | |
736 | css = [css] |
|
736 | css = [css] | |
737 | elif css is None: |
|
737 | elif css is None: | |
738 | css = [] |
|
738 | css = [] | |
739 | if not isinstance(lib, (list,tuple)): |
|
739 | if not isinstance(lib, (list,tuple)): | |
740 | raise TypeError('expected sequence, got: %r' % lib) |
|
740 | raise TypeError('expected sequence, got: %r' % lib) | |
741 | if not isinstance(css, (list,tuple)): |
|
741 | if not isinstance(css, (list,tuple)): | |
742 | raise TypeError('expected sequence, got: %r' % css) |
|
742 | raise TypeError('expected sequence, got: %r' % css) | |
743 | self.lib = lib |
|
743 | self.lib = lib | |
744 | self.css = css |
|
744 | self.css = css | |
745 | super(Javascript, self).__init__(data=data, url=url, filename=filename) |
|
745 | super(Javascript, self).__init__(data=data, url=url, filename=filename) | |
746 |
|
746 | |||
747 | def _repr_javascript_(self): |
|
747 | def _repr_javascript_(self): | |
748 | r = '' |
|
748 | r = '' | |
749 | for c in self.css: |
|
749 | for c in self.css: | |
750 | r += _css_t % c |
|
750 | r += _css_t % c | |
751 | for l in self.lib: |
|
751 | for l in self.lib: | |
752 | r += _lib_t1 % l |
|
752 | r += _lib_t1 % l | |
753 | r += self.data |
|
753 | r += self.data | |
754 | r += _lib_t2*len(self.lib) |
|
754 | r += _lib_t2*len(self.lib) | |
755 | return r |
|
755 | return r | |
756 |
|
756 | |||
757 | # constants for identifying png/jpeg data |
|
757 | # constants for identifying png/jpeg data | |
758 | _PNG = b'\x89PNG\r\n\x1a\n' |
|
758 | _PNG = b'\x89PNG\r\n\x1a\n' | |
759 | _JPEG = b'\xff\xd8' |
|
759 | _JPEG = b'\xff\xd8' | |
760 |
|
760 | |||
761 | def _pngxy(data): |
|
761 | def _pngxy(data): | |
762 | """read the (width, height) from a PNG header""" |
|
762 | """read the (width, height) from a PNG header""" | |
763 | ihdr = data.index(b'IHDR') |
|
763 | ihdr = data.index(b'IHDR') | |
764 | # next 8 bytes are width/height |
|
764 | # next 8 bytes are width/height | |
765 | return struct.unpack('>ii', data[ihdr+4:ihdr+12]) |
|
765 | return struct.unpack('>ii', data[ihdr+4:ihdr+12]) | |
766 |
|
766 | |||
767 | def _jpegxy(data): |
|
767 | def _jpegxy(data): | |
768 | """read the (width, height) from a JPEG header""" |
|
768 | """read the (width, height) from a JPEG header""" | |
769 | # adapted from http://www.64lines.com/jpeg-width-height |
|
769 | # adapted from http://www.64lines.com/jpeg-width-height | |
770 |
|
770 | |||
771 | idx = 4 |
|
771 | idx = 4 | |
772 | while True: |
|
772 | while True: | |
773 | block_size = struct.unpack('>H', data[idx:idx+2])[0] |
|
773 | block_size = struct.unpack('>H', data[idx:idx+2])[0] | |
774 | idx = idx + block_size |
|
774 | idx = idx + block_size | |
775 | if data[idx:idx+2] == b'\xFF\xC0': |
|
775 | if data[idx:idx+2] == b'\xFF\xC0': | |
776 | # found Start of Frame |
|
776 | # found Start of Frame | |
777 | iSOF = idx |
|
777 | iSOF = idx | |
778 | break |
|
778 | break | |
779 | else: |
|
779 | else: | |
780 | # read another block |
|
780 | # read another block | |
781 | idx += 2 |
|
781 | idx += 2 | |
782 |
|
782 | |||
783 | h, w = struct.unpack('>HH', data[iSOF+5:iSOF+9]) |
|
783 | h, w = struct.unpack('>HH', data[iSOF+5:iSOF+9]) | |
784 | return w, h |
|
784 | return w, h | |
785 |
|
785 | |||
786 | def _gifxy(data): |
|
786 | def _gifxy(data): | |
787 | """read the (width, height) from a GIF header""" |
|
787 | """read the (width, height) from a GIF header""" | |
788 | return struct.unpack('<HH', data[6:10]) |
|
788 | return struct.unpack('<HH', data[6:10]) | |
789 |
|
789 | |||
790 |
|
790 | |||
791 | class Image(DisplayObject): |
|
791 | class Image(DisplayObject): | |
792 |
|
792 | |||
793 | _read_flags = 'rb' |
|
793 | _read_flags = 'rb' | |
794 | _FMT_JPEG = u'jpeg' |
|
794 | _FMT_JPEG = u'jpeg' | |
795 | _FMT_PNG = u'png' |
|
795 | _FMT_PNG = u'png' | |
796 | _FMT_GIF = u'gif' |
|
796 | _FMT_GIF = u'gif' | |
797 | _ACCEPTABLE_EMBEDDINGS = [_FMT_JPEG, _FMT_PNG, _FMT_GIF] |
|
797 | _ACCEPTABLE_EMBEDDINGS = [_FMT_JPEG, _FMT_PNG, _FMT_GIF] | |
798 | _MIMETYPES = { |
|
798 | _MIMETYPES = { | |
799 | _FMT_PNG: 'image/png', |
|
799 | _FMT_PNG: 'image/png', | |
800 | _FMT_JPEG: 'image/jpeg', |
|
800 | _FMT_JPEG: 'image/jpeg', | |
801 | _FMT_GIF: 'image/gif', |
|
801 | _FMT_GIF: 'image/gif', | |
802 | } |
|
802 | } | |
803 |
|
803 | |||
804 | def __init__(self, data=None, url=None, filename=None, format=None, |
|
804 | def __init__(self, data=None, url=None, filename=None, format=None, | |
805 | embed=None, width=None, height=None, retina=False, |
|
805 | embed=None, width=None, height=None, retina=False, | |
806 | unconfined=False, metadata=None): |
|
806 | unconfined=False, metadata=None): | |
807 | """Create a PNG/JPEG/GIF image object given raw data. |
|
807 | """Create a PNG/JPEG/GIF image object given raw data. | |
808 |
|
808 | |||
809 | When this object is returned by an input cell or passed to the |
|
809 | When this object is returned by an input cell or passed to the | |
810 | display function, it will result in the image being displayed |
|
810 | display function, it will result in the image being displayed | |
811 | in the frontend. |
|
811 | in the frontend. | |
812 |
|
812 | |||
813 | Parameters |
|
813 | Parameters | |
814 | ---------- |
|
814 | ---------- | |
815 | data : unicode, str or bytes |
|
815 | data : unicode, str or bytes | |
816 | The raw image data or a URL or filename to load the data from. |
|
816 | The raw image data or a URL or filename to load the data from. | |
817 | This always results in embedded image data. |
|
817 | This always results in embedded image data. | |
818 | url : unicode |
|
818 | url : unicode | |
819 | A URL to download the data from. If you specify `url=`, |
|
819 | A URL to download the data from. If you specify `url=`, | |
820 | the image data will not be embedded unless you also specify `embed=True`. |
|
820 | the image data will not be embedded unless you also specify `embed=True`. | |
821 | filename : unicode |
|
821 | filename : unicode | |
822 | Path to a local file to load the data from. |
|
822 | Path to a local file to load the data from. | |
823 | Images from a file are always embedded. |
|
823 | Images from a file are always embedded. | |
824 | format : unicode |
|
824 | format : unicode | |
825 | The format of the image data (png/jpeg/jpg/gif). If a filename or URL is given |
|
825 | The format of the image data (png/jpeg/jpg/gif). If a filename or URL is given | |
826 | for format will be inferred from the filename extension. |
|
826 | for format will be inferred from the filename extension. | |
827 | embed : bool |
|
827 | embed : bool | |
828 | Should the image data be embedded using a data URI (True) or be |
|
828 | Should the image data be embedded using a data URI (True) or be | |
829 | loaded using an <img> tag. Set this to True if you want the image |
|
829 | loaded using an <img> tag. Set this to True if you want the image | |
830 | to be viewable later with no internet connection in the notebook. |
|
830 | to be viewable later with no internet connection in the notebook. | |
831 |
|
831 | |||
832 | Default is `True`, unless the keyword argument `url` is set, then |
|
832 | Default is `True`, unless the keyword argument `url` is set, then | |
833 | default value is `False`. |
|
833 | default value is `False`. | |
834 |
|
834 | |||
835 | Note that QtConsole is not able to display images if `embed` is set to `False` |
|
835 | Note that QtConsole is not able to display images if `embed` is set to `False` | |
836 | width : int |
|
836 | width : int | |
837 | Width in pixels to which to constrain the image in html |
|
837 | Width in pixels to which to constrain the image in html | |
838 | height : int |
|
838 | height : int | |
839 | Height in pixels to which to constrain the image in html |
|
839 | Height in pixels to which to constrain the image in html | |
840 | retina : bool |
|
840 | retina : bool | |
841 | Automatically set the width and height to half of the measured |
|
841 | Automatically set the width and height to half of the measured | |
842 | width and height. |
|
842 | width and height. | |
843 | This only works for embedded images because it reads the width/height |
|
843 | This only works for embedded images because it reads the width/height | |
844 | from image data. |
|
844 | from image data. | |
845 | For non-embedded images, you can just set the desired display width |
|
845 | For non-embedded images, you can just set the desired display width | |
846 | and height directly. |
|
846 | and height directly. | |
847 | unconfined: bool |
|
847 | unconfined: bool | |
848 | Set unconfined=True to disable max-width confinement of the image. |
|
848 | Set unconfined=True to disable max-width confinement of the image. | |
849 | metadata: dict |
|
849 | metadata: dict | |
850 | Specify extra metadata to attach to the image. |
|
850 | Specify extra metadata to attach to the image. | |
851 |
|
851 | |||
852 | Examples |
|
852 | Examples | |
853 | -------- |
|
853 | -------- | |
854 | # embedded image data, works in qtconsole and notebook |
|
854 | ||
855 | # when passed positionally, the first arg can be any of raw image data, |
|
855 | embedded image data, works in qtconsole and notebook | |
856 | # a URL, or a filename from which to load image data. |
|
856 | when passed positionally, the first arg can be any of raw image data, | |
857 | # The result is always embedding image data for inline images. |
|
857 | a URL, or a filename from which to load image data. | |
858 | Image('http://www.google.fr/images/srpr/logo3w.png') |
|
858 | The result is always embedding image data for inline images. | |
859 | Image('/path/to/image.jpg') |
|
859 | ||
860 | Image(b'RAW_PNG_DATA...') |
|
860 | >>> Image('http://www.google.fr/images/srpr/logo3w.png') | |
861 |
|
861 | <IPython.core.display.Image object> | ||
862 | # Specifying Image(url=...) does not embed the image data, |
|
862 | ||
863 | # it only generates `<img>` tag with a link to the source. |
|
863 | >>> Image('/path/to/image.jpg') | |
864 | # This will not work in the qtconsole or offline. |
|
864 | <IPython.core.display.Image object> | |
865 | Image(url='http://www.google.fr/images/srpr/logo3w.png') |
|
865 | ||
|
866 | >>> Image(b'RAW_PNG_DATA...') | |||
|
867 | <IPython.core.display.Image object> | |||
|
868 | ||||
|
869 | Specifying Image(url=...) does not embed the image data, | |||
|
870 | it only generates ``<img>`` tag with a link to the source. | |||
|
871 | This will not work in the qtconsole or offline. | |||
|
872 | ||||
|
873 | >>> Image(url='http://www.google.fr/images/srpr/logo3w.png') | |||
866 |
|
874 | |||
867 | """ |
|
875 | """ | |
868 | if isinstance(data, (Path, PurePath)): |
|
876 | if isinstance(data, (Path, PurePath)): | |
869 | data = str(data) |
|
877 | data = str(data) | |
870 |
|
878 | |||
871 | if filename is not None: |
|
879 | if filename is not None: | |
872 | ext = self._find_ext(filename) |
|
880 | ext = self._find_ext(filename) | |
873 | elif url is not None: |
|
881 | elif url is not None: | |
874 | ext = self._find_ext(url) |
|
882 | ext = self._find_ext(url) | |
875 | elif data is None: |
|
883 | elif data is None: | |
876 | raise ValueError("No image data found. Expecting filename, url, or data.") |
|
884 | raise ValueError("No image data found. Expecting filename, url, or data.") | |
877 | elif isinstance(data, str) and ( |
|
885 | elif isinstance(data, str) and ( | |
878 | data.startswith('http') or _safe_exists(data) |
|
886 | data.startswith('http') or _safe_exists(data) | |
879 | ): |
|
887 | ): | |
880 | ext = self._find_ext(data) |
|
888 | ext = self._find_ext(data) | |
881 | else: |
|
889 | else: | |
882 | ext = None |
|
890 | ext = None | |
883 |
|
891 | |||
884 | if format is None: |
|
892 | if format is None: | |
885 | if ext is not None: |
|
893 | if ext is not None: | |
886 | if ext == u'jpg' or ext == u'jpeg': |
|
894 | if ext == u'jpg' or ext == u'jpeg': | |
887 | format = self._FMT_JPEG |
|
895 | format = self._FMT_JPEG | |
888 | elif ext == u'png': |
|
896 | elif ext == u'png': | |
889 | format = self._FMT_PNG |
|
897 | format = self._FMT_PNG | |
890 | elif ext == u'gif': |
|
898 | elif ext == u'gif': | |
891 | format = self._FMT_GIF |
|
899 | format = self._FMT_GIF | |
892 | else: |
|
900 | else: | |
893 | format = ext.lower() |
|
901 | format = ext.lower() | |
894 | elif isinstance(data, bytes): |
|
902 | elif isinstance(data, bytes): | |
895 | # infer image type from image data header, |
|
903 | # infer image type from image data header, | |
896 | # only if format has not been specified. |
|
904 | # only if format has not been specified. | |
897 | if data[:2] == _JPEG: |
|
905 | if data[:2] == _JPEG: | |
898 | format = self._FMT_JPEG |
|
906 | format = self._FMT_JPEG | |
899 |
|
907 | |||
900 | # failed to detect format, default png |
|
908 | # failed to detect format, default png | |
901 | if format is None: |
|
909 | if format is None: | |
902 | format = self._FMT_PNG |
|
910 | format = self._FMT_PNG | |
903 |
|
911 | |||
904 | if format.lower() == 'jpg': |
|
912 | if format.lower() == 'jpg': | |
905 | # jpg->jpeg |
|
913 | # jpg->jpeg | |
906 | format = self._FMT_JPEG |
|
914 | format = self._FMT_JPEG | |
907 |
|
915 | |||
908 | self.format = format.lower() |
|
916 | self.format = format.lower() | |
909 | self.embed = embed if embed is not None else (url is None) |
|
917 | self.embed = embed if embed is not None else (url is None) | |
910 |
|
918 | |||
911 | if self.embed and self.format not in self._ACCEPTABLE_EMBEDDINGS: |
|
919 | if self.embed and self.format not in self._ACCEPTABLE_EMBEDDINGS: | |
912 | raise ValueError("Cannot embed the '%s' image format" % (self.format)) |
|
920 | raise ValueError("Cannot embed the '%s' image format" % (self.format)) | |
913 | if self.embed: |
|
921 | if self.embed: | |
914 | self._mimetype = self._MIMETYPES.get(self.format) |
|
922 | self._mimetype = self._MIMETYPES.get(self.format) | |
915 |
|
923 | |||
916 | self.width = width |
|
924 | self.width = width | |
917 | self.height = height |
|
925 | self.height = height | |
918 | self.retina = retina |
|
926 | self.retina = retina | |
919 | self.unconfined = unconfined |
|
927 | self.unconfined = unconfined | |
920 | super(Image, self).__init__(data=data, url=url, filename=filename, |
|
928 | super(Image, self).__init__(data=data, url=url, filename=filename, | |
921 | metadata=metadata) |
|
929 | metadata=metadata) | |
922 |
|
930 | |||
923 | if self.width is None and self.metadata.get('width', {}): |
|
931 | if self.width is None and self.metadata.get('width', {}): | |
924 | self.width = metadata['width'] |
|
932 | self.width = metadata['width'] | |
925 |
|
933 | |||
926 | if self.height is None and self.metadata.get('height', {}): |
|
934 | if self.height is None and self.metadata.get('height', {}): | |
927 | self.height = metadata['height'] |
|
935 | self.height = metadata['height'] | |
928 |
|
936 | |||
929 | if retina: |
|
937 | if retina: | |
930 | self._retina_shape() |
|
938 | self._retina_shape() | |
931 |
|
939 | |||
932 |
|
940 | |||
933 | def _retina_shape(self): |
|
941 | def _retina_shape(self): | |
934 | """load pixel-doubled width and height from image data""" |
|
942 | """load pixel-doubled width and height from image data""" | |
935 | if not self.embed: |
|
943 | if not self.embed: | |
936 | return |
|
944 | return | |
937 | if self.format == self._FMT_PNG: |
|
945 | if self.format == self._FMT_PNG: | |
938 | w, h = _pngxy(self.data) |
|
946 | w, h = _pngxy(self.data) | |
939 | elif self.format == self._FMT_JPEG: |
|
947 | elif self.format == self._FMT_JPEG: | |
940 | w, h = _jpegxy(self.data) |
|
948 | w, h = _jpegxy(self.data) | |
941 | elif self.format == self._FMT_GIF: |
|
949 | elif self.format == self._FMT_GIF: | |
942 | w, h = _gifxy(self.data) |
|
950 | w, h = _gifxy(self.data) | |
943 | else: |
|
951 | else: | |
944 | # retina only supports png |
|
952 | # retina only supports png | |
945 | return |
|
953 | return | |
946 | self.width = w // 2 |
|
954 | self.width = w // 2 | |
947 | self.height = h // 2 |
|
955 | self.height = h // 2 | |
948 |
|
956 | |||
949 | def reload(self): |
|
957 | def reload(self): | |
950 | """Reload the raw data from file or URL.""" |
|
958 | """Reload the raw data from file or URL.""" | |
951 | if self.embed: |
|
959 | if self.embed: | |
952 | super(Image,self).reload() |
|
960 | super(Image,self).reload() | |
953 | if self.retina: |
|
961 | if self.retina: | |
954 | self._retina_shape() |
|
962 | self._retina_shape() | |
955 |
|
963 | |||
956 | def _repr_html_(self): |
|
964 | def _repr_html_(self): | |
957 | if not self.embed: |
|
965 | if not self.embed: | |
958 | width = height = klass = '' |
|
966 | width = height = klass = '' | |
959 | if self.width: |
|
967 | if self.width: | |
960 | width = ' width="%d"' % self.width |
|
968 | width = ' width="%d"' % self.width | |
961 | if self.height: |
|
969 | if self.height: | |
962 | height = ' height="%d"' % self.height |
|
970 | height = ' height="%d"' % self.height | |
963 | if self.unconfined: |
|
971 | if self.unconfined: | |
964 | klass = ' class="unconfined"' |
|
972 | klass = ' class="unconfined"' | |
965 | return u'<img src="{url}"{width}{height}{klass}/>'.format( |
|
973 | return u'<img src="{url}"{width}{height}{klass}/>'.format( | |
966 | url=self.url, |
|
974 | url=self.url, | |
967 | width=width, |
|
975 | width=width, | |
968 | height=height, |
|
976 | height=height, | |
969 | klass=klass, |
|
977 | klass=klass, | |
970 | ) |
|
978 | ) | |
971 |
|
979 | |||
972 | def _repr_mimebundle_(self, include=None, exclude=None): |
|
980 | def _repr_mimebundle_(self, include=None, exclude=None): | |
973 | """Return the image as a mimebundle |
|
981 | """Return the image as a mimebundle | |
974 |
|
982 | |||
975 | Any new mimetype support should be implemented here. |
|
983 | Any new mimetype support should be implemented here. | |
976 | """ |
|
984 | """ | |
977 | if self.embed: |
|
985 | if self.embed: | |
978 | mimetype = self._mimetype |
|
986 | mimetype = self._mimetype | |
979 | data, metadata = self._data_and_metadata(always_both=True) |
|
987 | data, metadata = self._data_and_metadata(always_both=True) | |
980 | if metadata: |
|
988 | if metadata: | |
981 | metadata = {mimetype: metadata} |
|
989 | metadata = {mimetype: metadata} | |
982 | return {mimetype: data}, metadata |
|
990 | return {mimetype: data}, metadata | |
983 | else: |
|
991 | else: | |
984 | return {'text/html': self._repr_html_()} |
|
992 | return {'text/html': self._repr_html_()} | |
985 |
|
993 | |||
986 | def _data_and_metadata(self, always_both=False): |
|
994 | def _data_and_metadata(self, always_both=False): | |
987 | """shortcut for returning metadata with shape information, if defined""" |
|
995 | """shortcut for returning metadata with shape information, if defined""" | |
988 | try: |
|
996 | try: | |
989 | b64_data = b2a_base64(self.data).decode('ascii') |
|
997 | b64_data = b2a_base64(self.data).decode('ascii') | |
990 | except TypeError as e: |
|
998 | except TypeError as e: | |
991 | raise FileNotFoundError( |
|
999 | raise FileNotFoundError( | |
992 | "No such file or directory: '%s'" % (self.data)) from e |
|
1000 | "No such file or directory: '%s'" % (self.data)) from e | |
993 | md = {} |
|
1001 | md = {} | |
994 | if self.metadata: |
|
1002 | if self.metadata: | |
995 | md.update(self.metadata) |
|
1003 | md.update(self.metadata) | |
996 | if self.width: |
|
1004 | if self.width: | |
997 | md['width'] = self.width |
|
1005 | md['width'] = self.width | |
998 | if self.height: |
|
1006 | if self.height: | |
999 | md['height'] = self.height |
|
1007 | md['height'] = self.height | |
1000 | if self.unconfined: |
|
1008 | if self.unconfined: | |
1001 | md['unconfined'] = self.unconfined |
|
1009 | md['unconfined'] = self.unconfined | |
1002 | if md or always_both: |
|
1010 | if md or always_both: | |
1003 | return b64_data, md |
|
1011 | return b64_data, md | |
1004 | else: |
|
1012 | else: | |
1005 | return b64_data |
|
1013 | return b64_data | |
1006 |
|
1014 | |||
1007 | def _repr_png_(self): |
|
1015 | def _repr_png_(self): | |
1008 | if self.embed and self.format == self._FMT_PNG: |
|
1016 | if self.embed and self.format == self._FMT_PNG: | |
1009 | return self._data_and_metadata() |
|
1017 | return self._data_and_metadata() | |
1010 |
|
1018 | |||
1011 | def _repr_jpeg_(self): |
|
1019 | def _repr_jpeg_(self): | |
1012 | if self.embed and self.format == self._FMT_JPEG: |
|
1020 | if self.embed and self.format == self._FMT_JPEG: | |
1013 | return self._data_and_metadata() |
|
1021 | return self._data_and_metadata() | |
1014 |
|
1022 | |||
1015 | def _find_ext(self, s): |
|
1023 | def _find_ext(self, s): | |
1016 | base, ext = splitext(s) |
|
1024 | base, ext = splitext(s) | |
1017 |
|
1025 | |||
1018 | if not ext: |
|
1026 | if not ext: | |
1019 | return base |
|
1027 | return base | |
1020 |
|
1028 | |||
1021 | # `splitext` includes leading period, so we skip it |
|
1029 | # `splitext` includes leading period, so we skip it | |
1022 | return ext[1:].lower() |
|
1030 | return ext[1:].lower() | |
1023 |
|
1031 | |||
1024 |
|
1032 | |||
1025 | class Video(DisplayObject): |
|
1033 | class Video(DisplayObject): | |
1026 |
|
1034 | |||
1027 | def __init__(self, data=None, url=None, filename=None, embed=False, |
|
1035 | def __init__(self, data=None, url=None, filename=None, embed=False, | |
1028 | mimetype=None, width=None, height=None, html_attributes="controls"): |
|
1036 | mimetype=None, width=None, height=None, html_attributes="controls"): | |
1029 | """Create a video object given raw data or an URL. |
|
1037 | """Create a video object given raw data or an URL. | |
1030 |
|
1038 | |||
1031 | When this object is returned by an input cell or passed to the |
|
1039 | When this object is returned by an input cell or passed to the | |
1032 | display function, it will result in the video being displayed |
|
1040 | display function, it will result in the video being displayed | |
1033 | in the frontend. |
|
1041 | in the frontend. | |
1034 |
|
1042 | |||
1035 | Parameters |
|
1043 | Parameters | |
1036 | ---------- |
|
1044 | ---------- | |
1037 | data : unicode, str or bytes |
|
1045 | data : unicode, str or bytes | |
1038 | The raw video data or a URL or filename to load the data from. |
|
1046 | The raw video data or a URL or filename to load the data from. | |
1039 | Raw data will require passing `embed=True`. |
|
1047 | Raw data will require passing `embed=True`. | |
1040 | url : unicode |
|
1048 | url : unicode | |
1041 | A URL for the video. If you specify `url=`, |
|
1049 | A URL for the video. If you specify `url=`, | |
1042 | the image data will not be embedded. |
|
1050 | the image data will not be embedded. | |
1043 | filename : unicode |
|
1051 | filename : unicode | |
1044 | Path to a local file containing the video. |
|
1052 | Path to a local file containing the video. | |
1045 | Will be interpreted as a local URL unless `embed=True`. |
|
1053 | Will be interpreted as a local URL unless `embed=True`. | |
1046 | embed : bool |
|
1054 | embed : bool | |
1047 | Should the video be embedded using a data URI (True) or be |
|
1055 | Should the video be embedded using a data URI (True) or be | |
1048 | loaded using a <video> tag (False). |
|
1056 | loaded using a <video> tag (False). | |
1049 |
|
1057 | |||
1050 | Since videos are large, embedding them should be avoided, if possible. |
|
1058 | Since videos are large, embedding them should be avoided, if possible. | |
1051 | You must confirm embedding as your intention by passing `embed=True`. |
|
1059 | You must confirm embedding as your intention by passing `embed=True`. | |
1052 |
|
1060 | |||
1053 | Local files can be displayed with URLs without embedding the content, via:: |
|
1061 | Local files can be displayed with URLs without embedding the content, via:: | |
1054 |
|
1062 | |||
1055 | Video('./video.mp4') |
|
1063 | Video('./video.mp4') | |
1056 |
|
1064 | |||
1057 | mimetype: unicode |
|
1065 | mimetype: unicode | |
1058 | Specify the mimetype for embedded videos. |
|
1066 | Specify the mimetype for embedded videos. | |
1059 | Default will be guessed from file extension, if available. |
|
1067 | Default will be guessed from file extension, if available. | |
1060 | width : int |
|
1068 | width : int | |
1061 | Width in pixels to which to constrain the video in HTML. |
|
1069 | Width in pixels to which to constrain the video in HTML. | |
1062 | If not supplied, defaults to the width of the video. |
|
1070 | If not supplied, defaults to the width of the video. | |
1063 | height : int |
|
1071 | height : int | |
1064 | Height in pixels to which to constrain the video in html. |
|
1072 | Height in pixels to which to constrain the video in html. | |
1065 | If not supplied, defaults to the height of the video. |
|
1073 | If not supplied, defaults to the height of the video. | |
1066 | html_attributes : str |
|
1074 | html_attributes : str | |
1067 | Attributes for the HTML `<video>` block. |
|
1075 | Attributes for the HTML `<video>` block. | |
1068 | Default: `"controls"` to get video controls. |
|
1076 | Default: `"controls"` to get video controls. | |
1069 | Other examples: `"controls muted"` for muted video with controls, |
|
1077 | Other examples: `"controls muted"` for muted video with controls, | |
1070 | `"loop autoplay"` for looping autoplaying video without controls. |
|
1078 | `"loop autoplay"` for looping autoplaying video without controls. | |
1071 |
|
1079 | |||
1072 | Examples |
|
1080 | Examples | |
1073 | -------- |
|
1081 | -------- | |
1074 |
|
1082 | |||
1075 | :: |
|
1083 | :: | |
1076 |
|
1084 | |||
1077 | Video('https://archive.org/download/Sita_Sings_the_Blues/Sita_Sings_the_Blues_small.mp4') |
|
1085 | Video('https://archive.org/download/Sita_Sings_the_Blues/Sita_Sings_the_Blues_small.mp4') | |
1078 | Video('path/to/video.mp4') |
|
1086 | Video('path/to/video.mp4') | |
1079 | Video('path/to/video.mp4', embed=True) |
|
1087 | Video('path/to/video.mp4', embed=True) | |
1080 | Video('path/to/video.mp4', embed=True, html_attributes="controls muted autoplay") |
|
1088 | Video('path/to/video.mp4', embed=True, html_attributes="controls muted autoplay") | |
1081 | Video(b'raw-videodata', embed=True) |
|
1089 | Video(b'raw-videodata', embed=True) | |
1082 | """ |
|
1090 | """ | |
1083 | if isinstance(data, (Path, PurePath)): |
|
1091 | if isinstance(data, (Path, PurePath)): | |
1084 | data = str(data) |
|
1092 | data = str(data) | |
1085 |
|
1093 | |||
1086 | if url is None and isinstance(data, str) and data.startswith(('http:', 'https:')): |
|
1094 | if url is None and isinstance(data, str) and data.startswith(('http:', 'https:')): | |
1087 | url = data |
|
1095 | url = data | |
1088 | data = None |
|
1096 | data = None | |
1089 | elif data is not None and os.path.exists(data): |
|
1097 | elif data is not None and os.path.exists(data): | |
1090 | filename = data |
|
1098 | filename = data | |
1091 | data = None |
|
1099 | data = None | |
1092 |
|
1100 | |||
1093 | if data and not embed: |
|
1101 | if data and not embed: | |
1094 | msg = ''.join([ |
|
1102 | msg = ''.join([ | |
1095 | "To embed videos, you must pass embed=True ", |
|
1103 | "To embed videos, you must pass embed=True ", | |
1096 | "(this may make your notebook files huge)\n", |
|
1104 | "(this may make your notebook files huge)\n", | |
1097 | "Consider passing Video(url='...')", |
|
1105 | "Consider passing Video(url='...')", | |
1098 | ]) |
|
1106 | ]) | |
1099 | raise ValueError(msg) |
|
1107 | raise ValueError(msg) | |
1100 |
|
1108 | |||
1101 | self.mimetype = mimetype |
|
1109 | self.mimetype = mimetype | |
1102 | self.embed = embed |
|
1110 | self.embed = embed | |
1103 | self.width = width |
|
1111 | self.width = width | |
1104 | self.height = height |
|
1112 | self.height = height | |
1105 | self.html_attributes = html_attributes |
|
1113 | self.html_attributes = html_attributes | |
1106 | super(Video, self).__init__(data=data, url=url, filename=filename) |
|
1114 | super(Video, self).__init__(data=data, url=url, filename=filename) | |
1107 |
|
1115 | |||
1108 | def _repr_html_(self): |
|
1116 | def _repr_html_(self): | |
1109 | width = height = '' |
|
1117 | width = height = '' | |
1110 | if self.width: |
|
1118 | if self.width: | |
1111 | width = ' width="%d"' % self.width |
|
1119 | width = ' width="%d"' % self.width | |
1112 | if self.height: |
|
1120 | if self.height: | |
1113 | height = ' height="%d"' % self.height |
|
1121 | height = ' height="%d"' % self.height | |
1114 |
|
1122 | |||
1115 | # External URLs and potentially local files are not embedded into the |
|
1123 | # External URLs and potentially local files are not embedded into the | |
1116 | # notebook output. |
|
1124 | # notebook output. | |
1117 | if not self.embed: |
|
1125 | if not self.embed: | |
1118 | url = self.url if self.url is not None else self.filename |
|
1126 | url = self.url if self.url is not None else self.filename | |
1119 | output = """<video src="{0}" {1} {2} {3}> |
|
1127 | output = """<video src="{0}" {1} {2} {3}> | |
1120 | Your browser does not support the <code>video</code> element. |
|
1128 | Your browser does not support the <code>video</code> element. | |
1121 | </video>""".format(url, self.html_attributes, width, height) |
|
1129 | </video>""".format(url, self.html_attributes, width, height) | |
1122 | return output |
|
1130 | return output | |
1123 |
|
1131 | |||
1124 | # Embedded videos are base64-encoded. |
|
1132 | # Embedded videos are base64-encoded. | |
1125 | mimetype = self.mimetype |
|
1133 | mimetype = self.mimetype | |
1126 | if self.filename is not None: |
|
1134 | if self.filename is not None: | |
1127 | if not mimetype: |
|
1135 | if not mimetype: | |
1128 | mimetype, _ = mimetypes.guess_type(self.filename) |
|
1136 | mimetype, _ = mimetypes.guess_type(self.filename) | |
1129 |
|
1137 | |||
1130 | with open(self.filename, 'rb') as f: |
|
1138 | with open(self.filename, 'rb') as f: | |
1131 | video = f.read() |
|
1139 | video = f.read() | |
1132 | else: |
|
1140 | else: | |
1133 | video = self.data |
|
1141 | video = self.data | |
1134 | if isinstance(video, str): |
|
1142 | if isinstance(video, str): | |
1135 | # unicode input is already b64-encoded |
|
1143 | # unicode input is already b64-encoded | |
1136 | b64_video = video |
|
1144 | b64_video = video | |
1137 | else: |
|
1145 | else: | |
1138 | b64_video = b2a_base64(video).decode('ascii').rstrip() |
|
1146 | b64_video = b2a_base64(video).decode('ascii').rstrip() | |
1139 |
|
1147 | |||
1140 | output = """<video {0} {1} {2}> |
|
1148 | output = """<video {0} {1} {2}> | |
1141 | <source src="data:{3};base64,{4}" type="{3}"> |
|
1149 | <source src="data:{3};base64,{4}" type="{3}"> | |
1142 | Your browser does not support the video tag. |
|
1150 | Your browser does not support the video tag. | |
1143 | </video>""".format(self.html_attributes, width, height, mimetype, b64_video) |
|
1151 | </video>""".format(self.html_attributes, width, height, mimetype, b64_video) | |
1144 | return output |
|
1152 | return output | |
1145 |
|
1153 | |||
1146 | def reload(self): |
|
1154 | def reload(self): | |
1147 | # TODO |
|
1155 | # TODO | |
1148 | pass |
|
1156 | pass | |
1149 |
|
1157 | |||
1150 |
|
1158 | |||
1151 | @skip_doctest |
|
1159 | @skip_doctest | |
1152 | def set_matplotlib_formats(*formats, **kwargs): |
|
1160 | def set_matplotlib_formats(*formats, **kwargs): | |
1153 | """Select figure formats for the inline backend. Optionally pass quality for JPEG. |
|
1161 | """Select figure formats for the inline backend. Optionally pass quality for JPEG. | |
1154 |
|
1162 | |||
1155 | For example, this enables PNG and JPEG output with a JPEG quality of 90%:: |
|
1163 | For example, this enables PNG and JPEG output with a JPEG quality of 90%:: | |
1156 |
|
1164 | |||
1157 | In [1]: set_matplotlib_formats('png', 'jpeg', quality=90) |
|
1165 | In [1]: set_matplotlib_formats('png', 'jpeg', quality=90) | |
1158 |
|
1166 | |||
1159 | To set this in your config files use the following:: |
|
1167 | To set this in your config files use the following:: | |
1160 |
|
1168 | |||
1161 | c.InlineBackend.figure_formats = {'png', 'jpeg'} |
|
1169 | c.InlineBackend.figure_formats = {'png', 'jpeg'} | |
1162 | c.InlineBackend.print_figure_kwargs.update({'quality' : 90}) |
|
1170 | c.InlineBackend.print_figure_kwargs.update({'quality' : 90}) | |
1163 |
|
1171 | |||
1164 | Parameters |
|
1172 | Parameters | |
1165 | ---------- |
|
1173 | ---------- | |
1166 | *formats : strs |
|
1174 | *formats : strs | |
1167 | One or more figure formats to enable: 'png', 'retina', 'jpeg', 'svg', 'pdf'. |
|
1175 | One or more figure formats to enable: 'png', 'retina', 'jpeg', 'svg', 'pdf'. | |
1168 | **kwargs : |
|
1176 | **kwargs : | |
1169 | Keyword args will be relayed to ``figure.canvas.print_figure``. |
|
1177 | Keyword args will be relayed to ``figure.canvas.print_figure``. | |
1170 | """ |
|
1178 | """ | |
1171 | from IPython.core.interactiveshell import InteractiveShell |
|
1179 | from IPython.core.interactiveshell import InteractiveShell | |
1172 | from IPython.core.pylabtools import select_figure_formats |
|
1180 | from IPython.core.pylabtools import select_figure_formats | |
1173 | # build kwargs, starting with InlineBackend config |
|
1181 | # build kwargs, starting with InlineBackend config | |
1174 | kw = {} |
|
1182 | kw = {} | |
1175 | from ipykernel.pylab.config import InlineBackend |
|
1183 | from ipykernel.pylab.config import InlineBackend | |
1176 | cfg = InlineBackend.instance() |
|
1184 | cfg = InlineBackend.instance() | |
1177 | kw.update(cfg.print_figure_kwargs) |
|
1185 | kw.update(cfg.print_figure_kwargs) | |
1178 | kw.update(**kwargs) |
|
1186 | kw.update(**kwargs) | |
1179 | shell = InteractiveShell.instance() |
|
1187 | shell = InteractiveShell.instance() | |
1180 | select_figure_formats(shell, formats, **kw) |
|
1188 | select_figure_formats(shell, formats, **kw) | |
1181 |
|
1189 | |||
1182 | @skip_doctest |
|
1190 | @skip_doctest | |
1183 | def set_matplotlib_close(close=True): |
|
1191 | def set_matplotlib_close(close=True): | |
1184 | """Set whether the inline backend closes all figures automatically or not. |
|
1192 | """Set whether the inline backend closes all figures automatically or not. | |
1185 |
|
1193 | |||
1186 | By default, the inline backend used in the IPython Notebook will close all |
|
1194 | By default, the inline backend used in the IPython Notebook will close all | |
1187 | matplotlib figures automatically after each cell is run. This means that |
|
1195 | matplotlib figures automatically after each cell is run. This means that | |
1188 | plots in different cells won't interfere. Sometimes, you may want to make |
|
1196 | plots in different cells won't interfere. Sometimes, you may want to make | |
1189 | a plot in one cell and then refine it in later cells. This can be accomplished |
|
1197 | a plot in one cell and then refine it in later cells. This can be accomplished | |
1190 | by:: |
|
1198 | by:: | |
1191 |
|
1199 | |||
1192 | In [1]: set_matplotlib_close(False) |
|
1200 | In [1]: set_matplotlib_close(False) | |
1193 |
|
1201 | |||
1194 | To set this in your config files use the following:: |
|
1202 | To set this in your config files use the following:: | |
1195 |
|
1203 | |||
1196 | c.InlineBackend.close_figures = False |
|
1204 | c.InlineBackend.close_figures = False | |
1197 |
|
1205 | |||
1198 | Parameters |
|
1206 | Parameters | |
1199 | ---------- |
|
1207 | ---------- | |
1200 | close : bool |
|
1208 | close : bool | |
1201 | Should all matplotlib figures be automatically closed after each cell is |
|
1209 | Should all matplotlib figures be automatically closed after each cell is | |
1202 | run? |
|
1210 | run? | |
1203 | """ |
|
1211 | """ | |
1204 | from ipykernel.pylab.config import InlineBackend |
|
1212 | from ipykernel.pylab.config import InlineBackend | |
1205 | cfg = InlineBackend.instance() |
|
1213 | cfg = InlineBackend.instance() | |
1206 | cfg.close_figures = close |
|
1214 | cfg.close_figures = close |
@@ -1,659 +1,659 b'' | |||||
1 | """Various display related classes. |
|
1 | """Various display related classes. | |
2 |
|
2 | |||
3 | Authors : MinRK, gregcaporaso, dannystaple |
|
3 | Authors : MinRK, gregcaporaso, dannystaple | |
4 | """ |
|
4 | """ | |
5 | from html import escape as html_escape |
|
5 | from html import escape as html_escape | |
6 | from os.path import exists, isfile, splitext, abspath, join, isdir |
|
6 | from os.path import exists, isfile, splitext, abspath, join, isdir | |
7 | from os import walk, sep, fsdecode |
|
7 | from os import walk, sep, fsdecode | |
8 |
|
8 | |||
9 | from IPython.core.display import DisplayObject, TextDisplayObject |
|
9 | from IPython.core.display import DisplayObject, TextDisplayObject | |
10 |
|
10 | |||
11 | __all__ = ['Audio', 'IFrame', 'YouTubeVideo', 'VimeoVideo', 'ScribdDocument', |
|
11 | __all__ = ['Audio', 'IFrame', 'YouTubeVideo', 'VimeoVideo', 'ScribdDocument', | |
12 | 'FileLink', 'FileLinks', 'Code'] |
|
12 | 'FileLink', 'FileLinks', 'Code'] | |
13 |
|
13 | |||
14 |
|
14 | |||
15 | class Audio(DisplayObject): |
|
15 | class Audio(DisplayObject): | |
16 | """Create an audio object. |
|
16 | """Create an audio object. | |
17 |
|
17 | |||
18 | When this object is returned by an input cell or passed to the |
|
18 | When this object is returned by an input cell or passed to the | |
19 | display function, it will result in Audio controls being displayed |
|
19 | display function, it will result in Audio controls being displayed | |
20 | in the frontend (only works in the notebook). |
|
20 | in the frontend (only works in the notebook). | |
21 |
|
21 | |||
22 | Parameters |
|
22 | Parameters | |
23 | ---------- |
|
23 | ---------- | |
24 | data : numpy array, list, unicode, str or bytes |
|
24 | data : numpy array, list, unicode, str or bytes | |
25 | Can be one of |
|
25 | Can be one of | |
26 |
|
26 | |||
27 | * Numpy 1d array containing the desired waveform (mono) |
|
27 | * Numpy 1d array containing the desired waveform (mono) | |
28 | * Numpy 2d array containing waveforms for each channel. |
|
28 | * Numpy 2d array containing waveforms for each channel. | |
29 | Shape=(NCHAN, NSAMPLES). For the standard channel order, see |
|
29 | Shape=(NCHAN, NSAMPLES). For the standard channel order, see | |
30 | http://msdn.microsoft.com/en-us/library/windows/hardware/dn653308(v=vs.85).aspx |
|
30 | http://msdn.microsoft.com/en-us/library/windows/hardware/dn653308(v=vs.85).aspx | |
31 | * List of float or integer representing the waveform (mono) |
|
31 | * List of float or integer representing the waveform (mono) | |
32 | * String containing the filename |
|
32 | * String containing the filename | |
33 | * Bytestring containing raw PCM data or |
|
33 | * Bytestring containing raw PCM data or | |
34 | * URL pointing to a file on the web. |
|
34 | * URL pointing to a file on the web. | |
35 |
|
35 | |||
36 | If the array option is used, the waveform will be normalized. |
|
36 | If the array option is used, the waveform will be normalized. | |
37 |
|
37 | |||
38 | If a filename or url is used, the format support will be browser |
|
38 | If a filename or url is used, the format support will be browser | |
39 | dependent. |
|
39 | dependent. | |
40 | url : unicode |
|
40 | url : unicode | |
41 | A URL to download the data from. |
|
41 | A URL to download the data from. | |
42 | filename : unicode |
|
42 | filename : unicode | |
43 | Path to a local file to load the data from. |
|
43 | Path to a local file to load the data from. | |
44 | embed : boolean |
|
44 | embed : boolean | |
45 | Should the audio data be embedded using a data URI (True) or should |
|
45 | Should the audio data be embedded using a data URI (True) or should | |
46 | the original source be referenced. Set this to True if you want the |
|
46 | the original source be referenced. Set this to True if you want the | |
47 | audio to playable later with no internet connection in the notebook. |
|
47 | audio to playable later with no internet connection in the notebook. | |
48 |
|
48 | |||
49 | Default is `True`, unless the keyword argument `url` is set, then |
|
49 | Default is `True`, unless the keyword argument `url` is set, then | |
50 | default value is `False`. |
|
50 | default value is `False`. | |
51 | rate : integer |
|
51 | rate : integer | |
52 | The sampling rate of the raw data. |
|
52 | The sampling rate of the raw data. | |
53 | Only required when data parameter is being used as an array |
|
53 | Only required when data parameter is being used as an array | |
54 | autoplay : bool |
|
54 | autoplay : bool | |
55 | Set to True if the audio should immediately start playing. |
|
55 | Set to True if the audio should immediately start playing. | |
56 | Default is `False`. |
|
56 | Default is `False`. | |
57 | normalize : bool |
|
57 | normalize : bool | |
58 | Whether audio should be normalized (rescaled) to the maximum possible |
|
58 | Whether audio should be normalized (rescaled) to the maximum possible | |
59 | range. Default is `True`. When set to `False`, `data` must be between |
|
59 | range. Default is `True`. When set to `False`, `data` must be between | |
60 | -1 and 1 (inclusive), otherwise an error is raised. |
|
60 | -1 and 1 (inclusive), otherwise an error is raised. | |
61 | Applies only when `data` is a list or array of samples; other types of |
|
61 | Applies only when `data` is a list or array of samples; other types of | |
62 | audio are never normalized. |
|
62 | audio are never normalized. | |
63 |
|
63 | |||
64 | Examples |
|
64 | Examples | |
65 | -------- |
|
65 | -------- | |
66 |
|
66 | |||
67 | Generate a sound |
|
67 | Generate a sound | |
68 |
|
68 | |||
69 | >>> import numpy as np |
|
69 | >>> import numpy as np | |
70 | ... framerate = 44100 |
|
70 | ... framerate = 44100 | |
71 | ... t = np.linspace(0,5,framerate*5) |
|
71 | ... t = np.linspace(0,5,framerate*5) | |
72 | ... data = np.sin(2*np.pi*220*t) + np.sin(2*np.pi*224*t) |
|
72 | ... data = np.sin(2*np.pi*220*t) + np.sin(2*np.pi*224*t) | |
73 | ... Audio(data,rate=framerate) |
|
73 | ... Audio(data, rate=framerate) | |
74 |
|
74 | |||
75 | Can also do stereo or more channels |
|
75 | Can also do stereo or more channels | |
76 |
|
76 | |||
77 | >>> dataleft = np.sin(2*np.pi*220*t) |
|
77 | >>> dataleft = np.sin(2*np.pi*220*t) | |
78 | ... dataright = np.sin(2*np.pi*224*t) |
|
78 | ... dataright = np.sin(2*np.pi*224*t) | |
79 | ... Audio([dataleft, dataright],rate=framerate) |
|
79 | ... Audio([dataleft, dataright], rate=framerate) | |
80 |
|
80 | |||
81 | From URL: |
|
81 | From URL: | |
82 |
|
82 | |||
83 | >>> Audio("http://www.nch.com.au/acm/8k16bitpcm.wav") |
|
83 | >>> Audio("http://www.nch.com.au/acm/8k16bitpcm.wav") | |
84 | >>> Audio(url="http://www.w3schools.com/html/horse.ogg") |
|
84 | >>> Audio(url="http://www.w3schools.com/html/horse.ogg") | |
85 |
|
85 | |||
86 | From a File: |
|
86 | From a File: | |
87 |
|
87 | |||
88 | >>> Audio('/path/to/sound.wav') |
|
88 | >>> Audio('/path/to/sound.wav') | |
89 | >>> Audio(filename='/path/to/sound.ogg') |
|
89 | >>> Audio(filename='/path/to/sound.ogg') | |
90 |
|
90 | |||
91 | From Bytes: |
|
91 | From Bytes: | |
92 |
|
92 | |||
93 | >>> Audio(b'RAW_WAV_DATA..') |
|
93 | >>> Audio(b'RAW_WAV_DATA..') | |
94 | >>> Audio(data=b'RAW_WAV_DATA..') |
|
94 | >>> Audio(data=b'RAW_WAV_DATA..') | |
95 |
|
95 | |||
96 | See Also |
|
96 | See Also | |
97 | -------- |
|
97 | -------- | |
98 | ipywidgets.Audio |
|
98 | ipywidgets.Audio | |
99 |
|
99 | |||
100 | AUdio widget with more more flexibility and options. |
|
100 | AUdio widget with more more flexibility and options. | |
101 |
|
101 | |||
102 | """ |
|
102 | """ | |
103 | _read_flags = 'rb' |
|
103 | _read_flags = 'rb' | |
104 |
|
104 | |||
105 | def __init__(self, data=None, filename=None, url=None, embed=None, rate=None, autoplay=False, normalize=True, *, |
|
105 | def __init__(self, data=None, filename=None, url=None, embed=None, rate=None, autoplay=False, normalize=True, *, | |
106 | element_id=None): |
|
106 | element_id=None): | |
107 | if filename is None and url is None and data is None: |
|
107 | if filename is None and url is None and data is None: | |
108 | raise ValueError("No audio data found. Expecting filename, url, or data.") |
|
108 | raise ValueError("No audio data found. Expecting filename, url, or data.") | |
109 | if embed is False and url is None: |
|
109 | if embed is False and url is None: | |
110 | raise ValueError("No url found. Expecting url when embed=False") |
|
110 | raise ValueError("No url found. Expecting url when embed=False") | |
111 |
|
111 | |||
112 | if url is not None and embed is not True: |
|
112 | if url is not None and embed is not True: | |
113 | self.embed = False |
|
113 | self.embed = False | |
114 | else: |
|
114 | else: | |
115 | self.embed = True |
|
115 | self.embed = True | |
116 | self.autoplay = autoplay |
|
116 | self.autoplay = autoplay | |
117 | self.element_id = element_id |
|
117 | self.element_id = element_id | |
118 | super(Audio, self).__init__(data=data, url=url, filename=filename) |
|
118 | super(Audio, self).__init__(data=data, url=url, filename=filename) | |
119 |
|
119 | |||
120 | if self.data is not None and not isinstance(self.data, bytes): |
|
120 | if self.data is not None and not isinstance(self.data, bytes): | |
121 | if rate is None: |
|
121 | if rate is None: | |
122 | raise ValueError("rate must be specified when data is a numpy array or list of audio samples.") |
|
122 | raise ValueError("rate must be specified when data is a numpy array or list of audio samples.") | |
123 | self.data = Audio._make_wav(data, rate, normalize) |
|
123 | self.data = Audio._make_wav(data, rate, normalize) | |
124 |
|
124 | |||
125 | def reload(self): |
|
125 | def reload(self): | |
126 | """Reload the raw data from file or URL.""" |
|
126 | """Reload the raw data from file or URL.""" | |
127 | import mimetypes |
|
127 | import mimetypes | |
128 | if self.embed: |
|
128 | if self.embed: | |
129 | super(Audio, self).reload() |
|
129 | super(Audio, self).reload() | |
130 |
|
130 | |||
131 | if self.filename is not None: |
|
131 | if self.filename is not None: | |
132 | self.mimetype = mimetypes.guess_type(self.filename)[0] |
|
132 | self.mimetype = mimetypes.guess_type(self.filename)[0] | |
133 | elif self.url is not None: |
|
133 | elif self.url is not None: | |
134 | self.mimetype = mimetypes.guess_type(self.url)[0] |
|
134 | self.mimetype = mimetypes.guess_type(self.url)[0] | |
135 | else: |
|
135 | else: | |
136 | self.mimetype = "audio/wav" |
|
136 | self.mimetype = "audio/wav" | |
137 |
|
137 | |||
138 | @staticmethod |
|
138 | @staticmethod | |
139 | def _make_wav(data, rate, normalize): |
|
139 | def _make_wav(data, rate, normalize): | |
140 | """ Transform a numpy array to a PCM bytestring """ |
|
140 | """ Transform a numpy array to a PCM bytestring """ | |
141 | from io import BytesIO |
|
141 | from io import BytesIO | |
142 | import wave |
|
142 | import wave | |
143 |
|
143 | |||
144 | try: |
|
144 | try: | |
145 | scaled, nchan = Audio._validate_and_normalize_with_numpy(data, normalize) |
|
145 | scaled, nchan = Audio._validate_and_normalize_with_numpy(data, normalize) | |
146 | except ImportError: |
|
146 | except ImportError: | |
147 | scaled, nchan = Audio._validate_and_normalize_without_numpy(data, normalize) |
|
147 | scaled, nchan = Audio._validate_and_normalize_without_numpy(data, normalize) | |
148 |
|
148 | |||
149 | fp = BytesIO() |
|
149 | fp = BytesIO() | |
150 | waveobj = wave.open(fp,mode='wb') |
|
150 | waveobj = wave.open(fp,mode='wb') | |
151 | waveobj.setnchannels(nchan) |
|
151 | waveobj.setnchannels(nchan) | |
152 | waveobj.setframerate(rate) |
|
152 | waveobj.setframerate(rate) | |
153 | waveobj.setsampwidth(2) |
|
153 | waveobj.setsampwidth(2) | |
154 | waveobj.setcomptype('NONE','NONE') |
|
154 | waveobj.setcomptype('NONE','NONE') | |
155 | waveobj.writeframes(scaled) |
|
155 | waveobj.writeframes(scaled) | |
156 | val = fp.getvalue() |
|
156 | val = fp.getvalue() | |
157 | waveobj.close() |
|
157 | waveobj.close() | |
158 |
|
158 | |||
159 | return val |
|
159 | return val | |
160 |
|
160 | |||
161 | @staticmethod |
|
161 | @staticmethod | |
162 | def _validate_and_normalize_with_numpy(data, normalize): |
|
162 | def _validate_and_normalize_with_numpy(data, normalize): | |
163 | import numpy as np |
|
163 | import numpy as np | |
164 |
|
164 | |||
165 | data = np.array(data, dtype=float) |
|
165 | data = np.array(data, dtype=float) | |
166 | if len(data.shape) == 1: |
|
166 | if len(data.shape) == 1: | |
167 | nchan = 1 |
|
167 | nchan = 1 | |
168 | elif len(data.shape) == 2: |
|
168 | elif len(data.shape) == 2: | |
169 | # In wave files,channels are interleaved. E.g., |
|
169 | # In wave files,channels are interleaved. E.g., | |
170 | # "L1R1L2R2..." for stereo. See |
|
170 | # "L1R1L2R2..." for stereo. See | |
171 | # http://msdn.microsoft.com/en-us/library/windows/hardware/dn653308(v=vs.85).aspx |
|
171 | # http://msdn.microsoft.com/en-us/library/windows/hardware/dn653308(v=vs.85).aspx | |
172 | # for channel ordering |
|
172 | # for channel ordering | |
173 | nchan = data.shape[0] |
|
173 | nchan = data.shape[0] | |
174 | data = data.T.ravel() |
|
174 | data = data.T.ravel() | |
175 | else: |
|
175 | else: | |
176 | raise ValueError('Array audio input must be a 1D or 2D array') |
|
176 | raise ValueError('Array audio input must be a 1D or 2D array') | |
177 |
|
177 | |||
178 | max_abs_value = np.max(np.abs(data)) |
|
178 | max_abs_value = np.max(np.abs(data)) | |
179 | normalization_factor = Audio._get_normalization_factor(max_abs_value, normalize) |
|
179 | normalization_factor = Audio._get_normalization_factor(max_abs_value, normalize) | |
180 | scaled = data / normalization_factor * 32767 |
|
180 | scaled = data / normalization_factor * 32767 | |
181 | return scaled.astype('<h').tostring(), nchan |
|
181 | return scaled.astype('<h').tostring(), nchan | |
182 |
|
182 | |||
183 |
|
183 | |||
184 | @staticmethod |
|
184 | @staticmethod | |
185 | def _validate_and_normalize_without_numpy(data, normalize): |
|
185 | def _validate_and_normalize_without_numpy(data, normalize): | |
186 | import array |
|
186 | import array | |
187 | import sys |
|
187 | import sys | |
188 |
|
188 | |||
189 | data = array.array('f', data) |
|
189 | data = array.array('f', data) | |
190 |
|
190 | |||
191 | try: |
|
191 | try: | |
192 | max_abs_value = float(max([abs(x) for x in data])) |
|
192 | max_abs_value = float(max([abs(x) for x in data])) | |
193 | except TypeError as e: |
|
193 | except TypeError as e: | |
194 | raise TypeError('Only lists of mono audio are ' |
|
194 | raise TypeError('Only lists of mono audio are ' | |
195 | 'supported if numpy is not installed') from e |
|
195 | 'supported if numpy is not installed') from e | |
196 |
|
196 | |||
197 | normalization_factor = Audio._get_normalization_factor(max_abs_value, normalize) |
|
197 | normalization_factor = Audio._get_normalization_factor(max_abs_value, normalize) | |
198 | scaled = array.array('h', [int(x / normalization_factor * 32767) for x in data]) |
|
198 | scaled = array.array('h', [int(x / normalization_factor * 32767) for x in data]) | |
199 | if sys.byteorder == 'big': |
|
199 | if sys.byteorder == 'big': | |
200 | scaled.byteswap() |
|
200 | scaled.byteswap() | |
201 | nchan = 1 |
|
201 | nchan = 1 | |
202 | return scaled.tobytes(), nchan |
|
202 | return scaled.tobytes(), nchan | |
203 |
|
203 | |||
204 | @staticmethod |
|
204 | @staticmethod | |
205 | def _get_normalization_factor(max_abs_value, normalize): |
|
205 | def _get_normalization_factor(max_abs_value, normalize): | |
206 | if not normalize and max_abs_value > 1: |
|
206 | if not normalize and max_abs_value > 1: | |
207 | raise ValueError('Audio data must be between -1 and 1 when normalize=False.') |
|
207 | raise ValueError('Audio data must be between -1 and 1 when normalize=False.') | |
208 | return max_abs_value if normalize else 1 |
|
208 | return max_abs_value if normalize else 1 | |
209 |
|
209 | |||
210 | def _data_and_metadata(self): |
|
210 | def _data_and_metadata(self): | |
211 | """shortcut for returning metadata with url information, if defined""" |
|
211 | """shortcut for returning metadata with url information, if defined""" | |
212 | md = {} |
|
212 | md = {} | |
213 | if self.url: |
|
213 | if self.url: | |
214 | md['url'] = self.url |
|
214 | md['url'] = self.url | |
215 | if md: |
|
215 | if md: | |
216 | return self.data, md |
|
216 | return self.data, md | |
217 | else: |
|
217 | else: | |
218 | return self.data |
|
218 | return self.data | |
219 |
|
219 | |||
220 | def _repr_html_(self): |
|
220 | def _repr_html_(self): | |
221 | src = """ |
|
221 | src = """ | |
222 | <audio {element_id} controls="controls" {autoplay}> |
|
222 | <audio {element_id} controls="controls" {autoplay}> | |
223 | <source src="{src}" type="{type}" /> |
|
223 | <source src="{src}" type="{type}" /> | |
224 | Your browser does not support the audio element. |
|
224 | Your browser does not support the audio element. | |
225 | </audio> |
|
225 | </audio> | |
226 | """ |
|
226 | """ | |
227 | return src.format(src=self.src_attr(), type=self.mimetype, autoplay=self.autoplay_attr(), |
|
227 | return src.format(src=self.src_attr(), type=self.mimetype, autoplay=self.autoplay_attr(), | |
228 | element_id=self.element_id_attr()) |
|
228 | element_id=self.element_id_attr()) | |
229 |
|
229 | |||
230 | def src_attr(self): |
|
230 | def src_attr(self): | |
231 | import base64 |
|
231 | import base64 | |
232 | if self.embed and (self.data is not None): |
|
232 | if self.embed and (self.data is not None): | |
233 | data = base64=base64.b64encode(self.data).decode('ascii') |
|
233 | data = base64=base64.b64encode(self.data).decode('ascii') | |
234 | return """data:{type};base64,{base64}""".format(type=self.mimetype, |
|
234 | return """data:{type};base64,{base64}""".format(type=self.mimetype, | |
235 | base64=data) |
|
235 | base64=data) | |
236 | elif self.url is not None: |
|
236 | elif self.url is not None: | |
237 | return self.url |
|
237 | return self.url | |
238 | else: |
|
238 | else: | |
239 | return "" |
|
239 | return "" | |
240 |
|
240 | |||
241 | def autoplay_attr(self): |
|
241 | def autoplay_attr(self): | |
242 | if(self.autoplay): |
|
242 | if(self.autoplay): | |
243 | return 'autoplay="autoplay"' |
|
243 | return 'autoplay="autoplay"' | |
244 | else: |
|
244 | else: | |
245 | return '' |
|
245 | return '' | |
246 |
|
246 | |||
247 | def element_id_attr(self): |
|
247 | def element_id_attr(self): | |
248 | if (self.element_id): |
|
248 | if (self.element_id): | |
249 | return 'id="{element_id}"'.format(element_id=self.element_id) |
|
249 | return 'id="{element_id}"'.format(element_id=self.element_id) | |
250 | else: |
|
250 | else: | |
251 | return '' |
|
251 | return '' | |
252 |
|
252 | |||
253 | class IFrame(object): |
|
253 | class IFrame(object): | |
254 | """ |
|
254 | """ | |
255 | Generic class to embed an iframe in an IPython notebook |
|
255 | Generic class to embed an iframe in an IPython notebook | |
256 | """ |
|
256 | """ | |
257 |
|
257 | |||
258 | iframe = """ |
|
258 | iframe = """ | |
259 | <iframe |
|
259 | <iframe | |
260 | width="{width}" |
|
260 | width="{width}" | |
261 | height="{height}" |
|
261 | height="{height}" | |
262 | src="{src}{params}" |
|
262 | src="{src}{params}" | |
263 | frameborder="0" |
|
263 | frameborder="0" | |
264 | allowfullscreen |
|
264 | allowfullscreen | |
265 | ></iframe> |
|
265 | ></iframe> | |
266 | """ |
|
266 | """ | |
267 |
|
267 | |||
268 | def __init__(self, src, width, height, **kwargs): |
|
268 | def __init__(self, src, width, height, **kwargs): | |
269 | self.src = src |
|
269 | self.src = src | |
270 | self.width = width |
|
270 | self.width = width | |
271 | self.height = height |
|
271 | self.height = height | |
272 | self.params = kwargs |
|
272 | self.params = kwargs | |
273 |
|
273 | |||
274 | def _repr_html_(self): |
|
274 | def _repr_html_(self): | |
275 | """return the embed iframe""" |
|
275 | """return the embed iframe""" | |
276 | if self.params: |
|
276 | if self.params: | |
277 | from urllib.parse import urlencode |
|
277 | from urllib.parse import urlencode | |
278 | params = "?" + urlencode(self.params) |
|
278 | params = "?" + urlencode(self.params) | |
279 | else: |
|
279 | else: | |
280 | params = "" |
|
280 | params = "" | |
281 | return self.iframe.format(src=self.src, |
|
281 | return self.iframe.format(src=self.src, | |
282 | width=self.width, |
|
282 | width=self.width, | |
283 | height=self.height, |
|
283 | height=self.height, | |
284 | params=params) |
|
284 | params=params) | |
285 |
|
285 | |||
286 | class YouTubeVideo(IFrame): |
|
286 | class YouTubeVideo(IFrame): | |
287 | """Class for embedding a YouTube Video in an IPython session, based on its video id. |
|
287 | """Class for embedding a YouTube Video in an IPython session, based on its video id. | |
288 |
|
288 | |||
289 | e.g. to embed the video from https://www.youtube.com/watch?v=foo , you would |
|
289 | e.g. to embed the video from https://www.youtube.com/watch?v=foo , you would | |
290 | do:: |
|
290 | do:: | |
291 |
|
291 | |||
292 | vid = YouTubeVideo("foo") |
|
292 | vid = YouTubeVideo("foo") | |
293 | display(vid) |
|
293 | display(vid) | |
294 |
|
294 | |||
295 | To start from 30 seconds:: |
|
295 | To start from 30 seconds:: | |
296 |
|
296 | |||
297 | vid = YouTubeVideo("abc", start=30) |
|
297 | vid = YouTubeVideo("abc", start=30) | |
298 | display(vid) |
|
298 | display(vid) | |
299 |
|
299 | |||
300 | To calculate seconds from time as hours, minutes, seconds use |
|
300 | To calculate seconds from time as hours, minutes, seconds use | |
301 | :class:`datetime.timedelta`:: |
|
301 | :class:`datetime.timedelta`:: | |
302 |
|
302 | |||
303 | start=int(timedelta(hours=1, minutes=46, seconds=40).total_seconds()) |
|
303 | start=int(timedelta(hours=1, minutes=46, seconds=40).total_seconds()) | |
304 |
|
304 | |||
305 | Other parameters can be provided as documented at |
|
305 | Other parameters can be provided as documented at | |
306 | https://developers.google.com/youtube/player_parameters#Parameters |
|
306 | https://developers.google.com/youtube/player_parameters#Parameters | |
307 |
|
307 | |||
308 | When converting the notebook using nbconvert, a jpeg representation of the video |
|
308 | When converting the notebook using nbconvert, a jpeg representation of the video | |
309 | will be inserted in the document. |
|
309 | will be inserted in the document. | |
310 | """ |
|
310 | """ | |
311 |
|
311 | |||
312 | def __init__(self, id, width=400, height=300, **kwargs): |
|
312 | def __init__(self, id, width=400, height=300, **kwargs): | |
313 | self.id=id |
|
313 | self.id=id | |
314 | src = "https://www.youtube.com/embed/{0}".format(id) |
|
314 | src = "https://www.youtube.com/embed/{0}".format(id) | |
315 | super(YouTubeVideo, self).__init__(src, width, height, **kwargs) |
|
315 | super(YouTubeVideo, self).__init__(src, width, height, **kwargs) | |
316 |
|
316 | |||
317 | def _repr_jpeg_(self): |
|
317 | def _repr_jpeg_(self): | |
318 | # Deferred import |
|
318 | # Deferred import | |
319 | from urllib.request import urlopen |
|
319 | from urllib.request import urlopen | |
320 |
|
320 | |||
321 | try: |
|
321 | try: | |
322 | return urlopen("https://img.youtube.com/vi/{id}/hqdefault.jpg".format(id=self.id)).read() |
|
322 | return urlopen("https://img.youtube.com/vi/{id}/hqdefault.jpg".format(id=self.id)).read() | |
323 | except IOError: |
|
323 | except IOError: | |
324 | return None |
|
324 | return None | |
325 |
|
325 | |||
326 | class VimeoVideo(IFrame): |
|
326 | class VimeoVideo(IFrame): | |
327 | """ |
|
327 | """ | |
328 | Class for embedding a Vimeo video in an IPython session, based on its video id. |
|
328 | Class for embedding a Vimeo video in an IPython session, based on its video id. | |
329 | """ |
|
329 | """ | |
330 |
|
330 | |||
331 | def __init__(self, id, width=400, height=300, **kwargs): |
|
331 | def __init__(self, id, width=400, height=300, **kwargs): | |
332 | src="https://player.vimeo.com/video/{0}".format(id) |
|
332 | src="https://player.vimeo.com/video/{0}".format(id) | |
333 | super(VimeoVideo, self).__init__(src, width, height, **kwargs) |
|
333 | super(VimeoVideo, self).__init__(src, width, height, **kwargs) | |
334 |
|
334 | |||
335 | class ScribdDocument(IFrame): |
|
335 | class ScribdDocument(IFrame): | |
336 | """ |
|
336 | """ | |
337 | Class for embedding a Scribd document in an IPython session |
|
337 | Class for embedding a Scribd document in an IPython session | |
338 |
|
338 | |||
339 | Use the start_page params to specify a starting point in the document |
|
339 | Use the start_page params to specify a starting point in the document | |
340 | Use the view_mode params to specify display type one off scroll | slideshow | book |
|
340 | Use the view_mode params to specify display type one off scroll | slideshow | book | |
341 |
|
341 | |||
342 | e.g to Display Wes' foundational paper about PANDAS in book mode from page 3 |
|
342 | e.g to Display Wes' foundational paper about PANDAS in book mode from page 3 | |
343 |
|
343 | |||
344 | ScribdDocument(71048089, width=800, height=400, start_page=3, view_mode="book") |
|
344 | ScribdDocument(71048089, width=800, height=400, start_page=3, view_mode="book") | |
345 | """ |
|
345 | """ | |
346 |
|
346 | |||
347 | def __init__(self, id, width=400, height=300, **kwargs): |
|
347 | def __init__(self, id, width=400, height=300, **kwargs): | |
348 | src="https://www.scribd.com/embeds/{0}/content".format(id) |
|
348 | src="https://www.scribd.com/embeds/{0}/content".format(id) | |
349 | super(ScribdDocument, self).__init__(src, width, height, **kwargs) |
|
349 | super(ScribdDocument, self).__init__(src, width, height, **kwargs) | |
350 |
|
350 | |||
351 | class FileLink(object): |
|
351 | class FileLink(object): | |
352 | """Class for embedding a local file link in an IPython session, based on path |
|
352 | """Class for embedding a local file link in an IPython session, based on path | |
353 |
|
353 | |||
354 | e.g. to embed a link that was generated in the IPython notebook as my/data.txt |
|
354 | e.g. to embed a link that was generated in the IPython notebook as my/data.txt | |
355 |
|
355 | |||
356 | you would do:: |
|
356 | you would do:: | |
357 |
|
357 | |||
358 | local_file = FileLink("my/data.txt") |
|
358 | local_file = FileLink("my/data.txt") | |
359 | display(local_file) |
|
359 | display(local_file) | |
360 |
|
360 | |||
361 | or in the HTML notebook, just:: |
|
361 | or in the HTML notebook, just:: | |
362 |
|
362 | |||
363 | FileLink("my/data.txt") |
|
363 | FileLink("my/data.txt") | |
364 | """ |
|
364 | """ | |
365 |
|
365 | |||
366 | html_link_str = "<a href='%s' target='_blank'>%s</a>" |
|
366 | html_link_str = "<a href='%s' target='_blank'>%s</a>" | |
367 |
|
367 | |||
368 | def __init__(self, |
|
368 | def __init__(self, | |
369 | path, |
|
369 | path, | |
370 | url_prefix='', |
|
370 | url_prefix='', | |
371 | result_html_prefix='', |
|
371 | result_html_prefix='', | |
372 | result_html_suffix='<br>'): |
|
372 | result_html_suffix='<br>'): | |
373 | """ |
|
373 | """ | |
374 | Parameters |
|
374 | Parameters | |
375 | ---------- |
|
375 | ---------- | |
376 | path : str |
|
376 | path : str | |
377 | path to the file or directory that should be formatted |
|
377 | path to the file or directory that should be formatted | |
378 | url_prefix : str |
|
378 | url_prefix : str | |
379 | prefix to be prepended to all files to form a working link [default: |
|
379 | prefix to be prepended to all files to form a working link [default: | |
380 | ''] |
|
380 | ''] | |
381 | result_html_prefix : str |
|
381 | result_html_prefix : str | |
382 | text to append to beginning to link [default: ''] |
|
382 | text to append to beginning to link [default: ''] | |
383 | result_html_suffix : str |
|
383 | result_html_suffix : str | |
384 | text to append at the end of link [default: '<br>'] |
|
384 | text to append at the end of link [default: '<br>'] | |
385 | """ |
|
385 | """ | |
386 | if isdir(path): |
|
386 | if isdir(path): | |
387 | raise ValueError("Cannot display a directory using FileLink. " |
|
387 | raise ValueError("Cannot display a directory using FileLink. " | |
388 | "Use FileLinks to display '%s'." % path) |
|
388 | "Use FileLinks to display '%s'." % path) | |
389 | self.path = fsdecode(path) |
|
389 | self.path = fsdecode(path) | |
390 | self.url_prefix = url_prefix |
|
390 | self.url_prefix = url_prefix | |
391 | self.result_html_prefix = result_html_prefix |
|
391 | self.result_html_prefix = result_html_prefix | |
392 | self.result_html_suffix = result_html_suffix |
|
392 | self.result_html_suffix = result_html_suffix | |
393 |
|
393 | |||
394 | def _format_path(self): |
|
394 | def _format_path(self): | |
395 | fp = ''.join([self.url_prefix, html_escape(self.path)]) |
|
395 | fp = ''.join([self.url_prefix, html_escape(self.path)]) | |
396 | return ''.join([self.result_html_prefix, |
|
396 | return ''.join([self.result_html_prefix, | |
397 | self.html_link_str % \ |
|
397 | self.html_link_str % \ | |
398 | (fp, html_escape(self.path, quote=False)), |
|
398 | (fp, html_escape(self.path, quote=False)), | |
399 | self.result_html_suffix]) |
|
399 | self.result_html_suffix]) | |
400 |
|
400 | |||
401 | def _repr_html_(self): |
|
401 | def _repr_html_(self): | |
402 | """return html link to file |
|
402 | """return html link to file | |
403 | """ |
|
403 | """ | |
404 | if not exists(self.path): |
|
404 | if not exists(self.path): | |
405 | return ("Path (<tt>%s</tt>) doesn't exist. " |
|
405 | return ("Path (<tt>%s</tt>) doesn't exist. " | |
406 | "It may still be in the process of " |
|
406 | "It may still be in the process of " | |
407 | "being generated, or you may have the " |
|
407 | "being generated, or you may have the " | |
408 | "incorrect path." % self.path) |
|
408 | "incorrect path." % self.path) | |
409 |
|
409 | |||
410 | return self._format_path() |
|
410 | return self._format_path() | |
411 |
|
411 | |||
412 | def __repr__(self): |
|
412 | def __repr__(self): | |
413 | """return absolute path to file |
|
413 | """return absolute path to file | |
414 | """ |
|
414 | """ | |
415 | return abspath(self.path) |
|
415 | return abspath(self.path) | |
416 |
|
416 | |||
417 | class FileLinks(FileLink): |
|
417 | class FileLinks(FileLink): | |
418 | """Class for embedding local file links in an IPython session, based on path |
|
418 | """Class for embedding local file links in an IPython session, based on path | |
419 |
|
419 | |||
420 | e.g. to embed links to files that were generated in the IPython notebook |
|
420 | e.g. to embed links to files that were generated in the IPython notebook | |
421 | under ``my/data``, you would do:: |
|
421 | under ``my/data``, you would do:: | |
422 |
|
422 | |||
423 | local_files = FileLinks("my/data") |
|
423 | local_files = FileLinks("my/data") | |
424 | display(local_files) |
|
424 | display(local_files) | |
425 |
|
425 | |||
426 | or in the HTML notebook, just:: |
|
426 | or in the HTML notebook, just:: | |
427 |
|
427 | |||
428 | FileLinks("my/data") |
|
428 | FileLinks("my/data") | |
429 | """ |
|
429 | """ | |
430 | def __init__(self, |
|
430 | def __init__(self, | |
431 | path, |
|
431 | path, | |
432 | url_prefix='', |
|
432 | url_prefix='', | |
433 | included_suffixes=None, |
|
433 | included_suffixes=None, | |
434 | result_html_prefix='', |
|
434 | result_html_prefix='', | |
435 | result_html_suffix='<br>', |
|
435 | result_html_suffix='<br>', | |
436 | notebook_display_formatter=None, |
|
436 | notebook_display_formatter=None, | |
437 | terminal_display_formatter=None, |
|
437 | terminal_display_formatter=None, | |
438 | recursive=True): |
|
438 | recursive=True): | |
439 | """ |
|
439 | """ | |
440 | See :class:`FileLink` for the ``path``, ``url_prefix``, |
|
440 | See :class:`FileLink` for the ``path``, ``url_prefix``, | |
441 | ``result_html_prefix`` and ``result_html_suffix`` parameters. |
|
441 | ``result_html_prefix`` and ``result_html_suffix`` parameters. | |
442 |
|
442 | |||
443 | included_suffixes : list |
|
443 | included_suffixes : list | |
444 | Filename suffixes to include when formatting output [default: include |
|
444 | Filename suffixes to include when formatting output [default: include | |
445 | all files] |
|
445 | all files] | |
446 |
|
446 | |||
447 | notebook_display_formatter : function |
|
447 | notebook_display_formatter : function | |
448 | Used to format links for display in the notebook. See discussion of |
|
448 | Used to format links for display in the notebook. See discussion of | |
449 | formatter functions below. |
|
449 | formatter functions below. | |
450 |
|
450 | |||
451 | terminal_display_formatter : function |
|
451 | terminal_display_formatter : function | |
452 | Used to format links for display in the terminal. See discussion of |
|
452 | Used to format links for display in the terminal. See discussion of | |
453 | formatter functions below. |
|
453 | formatter functions below. | |
454 |
|
454 | |||
455 | Formatter functions must be of the form:: |
|
455 | Formatter functions must be of the form:: | |
456 |
|
456 | |||
457 | f(dirname, fnames, included_suffixes) |
|
457 | f(dirname, fnames, included_suffixes) | |
458 |
|
458 | |||
459 | dirname : str |
|
459 | dirname : str | |
460 | The name of a directory |
|
460 | The name of a directory | |
461 | fnames : list |
|
461 | fnames : list | |
462 | The files in that directory |
|
462 | The files in that directory | |
463 | included_suffixes : list |
|
463 | included_suffixes : list | |
464 | The file suffixes that should be included in the output (passing None |
|
464 | The file suffixes that should be included in the output (passing None | |
465 | meansto include all suffixes in the output in the built-in formatters) |
|
465 | meansto include all suffixes in the output in the built-in formatters) | |
466 | recursive : boolean |
|
466 | recursive : boolean | |
467 | Whether to recurse into subdirectories. Default is True. |
|
467 | Whether to recurse into subdirectories. Default is True. | |
468 |
|
468 | |||
469 | The function should return a list of lines that will be printed in the |
|
469 | The function should return a list of lines that will be printed in the | |
470 | notebook (if passing notebook_display_formatter) or the terminal (if |
|
470 | notebook (if passing notebook_display_formatter) or the terminal (if | |
471 | passing terminal_display_formatter). This function is iterated over for |
|
471 | passing terminal_display_formatter). This function is iterated over for | |
472 | each directory in self.path. Default formatters are in place, can be |
|
472 | each directory in self.path. Default formatters are in place, can be | |
473 | passed here to support alternative formatting. |
|
473 | passed here to support alternative formatting. | |
474 |
|
474 | |||
475 | """ |
|
475 | """ | |
476 | if isfile(path): |
|
476 | if isfile(path): | |
477 | raise ValueError("Cannot display a file using FileLinks. " |
|
477 | raise ValueError("Cannot display a file using FileLinks. " | |
478 | "Use FileLink to display '%s'." % path) |
|
478 | "Use FileLink to display '%s'." % path) | |
479 | self.included_suffixes = included_suffixes |
|
479 | self.included_suffixes = included_suffixes | |
480 | # remove trailing slashes for more consistent output formatting |
|
480 | # remove trailing slashes for more consistent output formatting | |
481 | path = path.rstrip('/') |
|
481 | path = path.rstrip('/') | |
482 |
|
482 | |||
483 | self.path = path |
|
483 | self.path = path | |
484 | self.url_prefix = url_prefix |
|
484 | self.url_prefix = url_prefix | |
485 | self.result_html_prefix = result_html_prefix |
|
485 | self.result_html_prefix = result_html_prefix | |
486 | self.result_html_suffix = result_html_suffix |
|
486 | self.result_html_suffix = result_html_suffix | |
487 |
|
487 | |||
488 | self.notebook_display_formatter = \ |
|
488 | self.notebook_display_formatter = \ | |
489 | notebook_display_formatter or self._get_notebook_display_formatter() |
|
489 | notebook_display_formatter or self._get_notebook_display_formatter() | |
490 | self.terminal_display_formatter = \ |
|
490 | self.terminal_display_formatter = \ | |
491 | terminal_display_formatter or self._get_terminal_display_formatter() |
|
491 | terminal_display_formatter or self._get_terminal_display_formatter() | |
492 |
|
492 | |||
493 | self.recursive = recursive |
|
493 | self.recursive = recursive | |
494 |
|
494 | |||
495 | def _get_display_formatter(self, |
|
495 | def _get_display_formatter(self, | |
496 | dirname_output_format, |
|
496 | dirname_output_format, | |
497 | fname_output_format, |
|
497 | fname_output_format, | |
498 | fp_format, |
|
498 | fp_format, | |
499 | fp_cleaner=None): |
|
499 | fp_cleaner=None): | |
500 | """ generate built-in formatter function |
|
500 | """ generate built-in formatter function | |
501 |
|
501 | |||
502 | this is used to define both the notebook and terminal built-in |
|
502 | this is used to define both the notebook and terminal built-in | |
503 | formatters as they only differ by some wrapper text for each entry |
|
503 | formatters as they only differ by some wrapper text for each entry | |
504 |
|
504 | |||
505 | dirname_output_format: string to use for formatting directory |
|
505 | dirname_output_format: string to use for formatting directory | |
506 | names, dirname will be substituted for a single "%s" which |
|
506 | names, dirname will be substituted for a single "%s" which | |
507 | must appear in this string |
|
507 | must appear in this string | |
508 | fname_output_format: string to use for formatting file names, |
|
508 | fname_output_format: string to use for formatting file names, | |
509 | if a single "%s" appears in the string, fname will be substituted |
|
509 | if a single "%s" appears in the string, fname will be substituted | |
510 | if two "%s" appear in the string, the path to fname will be |
|
510 | if two "%s" appear in the string, the path to fname will be | |
511 | substituted for the first and fname will be substituted for the |
|
511 | substituted for the first and fname will be substituted for the | |
512 | second |
|
512 | second | |
513 | fp_format: string to use for formatting filepaths, must contain |
|
513 | fp_format: string to use for formatting filepaths, must contain | |
514 | exactly two "%s" and the dirname will be substituted for the first |
|
514 | exactly two "%s" and the dirname will be substituted for the first | |
515 | and fname will be substituted for the second |
|
515 | and fname will be substituted for the second | |
516 | """ |
|
516 | """ | |
517 | def f(dirname, fnames, included_suffixes=None): |
|
517 | def f(dirname, fnames, included_suffixes=None): | |
518 | result = [] |
|
518 | result = [] | |
519 | # begin by figuring out which filenames, if any, |
|
519 | # begin by figuring out which filenames, if any, | |
520 | # are going to be displayed |
|
520 | # are going to be displayed | |
521 | display_fnames = [] |
|
521 | display_fnames = [] | |
522 | for fname in fnames: |
|
522 | for fname in fnames: | |
523 | if (isfile(join(dirname,fname)) and |
|
523 | if (isfile(join(dirname,fname)) and | |
524 | (included_suffixes is None or |
|
524 | (included_suffixes is None or | |
525 | splitext(fname)[1] in included_suffixes)): |
|
525 | splitext(fname)[1] in included_suffixes)): | |
526 | display_fnames.append(fname) |
|
526 | display_fnames.append(fname) | |
527 |
|
527 | |||
528 | if len(display_fnames) == 0: |
|
528 | if len(display_fnames) == 0: | |
529 | # if there are no filenames to display, don't print anything |
|
529 | # if there are no filenames to display, don't print anything | |
530 | # (not even the directory name) |
|
530 | # (not even the directory name) | |
531 | pass |
|
531 | pass | |
532 | else: |
|
532 | else: | |
533 | # otherwise print the formatted directory name followed by |
|
533 | # otherwise print the formatted directory name followed by | |
534 | # the formatted filenames |
|
534 | # the formatted filenames | |
535 | dirname_output_line = dirname_output_format % dirname |
|
535 | dirname_output_line = dirname_output_format % dirname | |
536 | result.append(dirname_output_line) |
|
536 | result.append(dirname_output_line) | |
537 | for fname in display_fnames: |
|
537 | for fname in display_fnames: | |
538 | fp = fp_format % (dirname,fname) |
|
538 | fp = fp_format % (dirname,fname) | |
539 | if fp_cleaner is not None: |
|
539 | if fp_cleaner is not None: | |
540 | fp = fp_cleaner(fp) |
|
540 | fp = fp_cleaner(fp) | |
541 | try: |
|
541 | try: | |
542 | # output can include both a filepath and a filename... |
|
542 | # output can include both a filepath and a filename... | |
543 | fname_output_line = fname_output_format % (fp, fname) |
|
543 | fname_output_line = fname_output_format % (fp, fname) | |
544 | except TypeError: |
|
544 | except TypeError: | |
545 | # ... or just a single filepath |
|
545 | # ... or just a single filepath | |
546 | fname_output_line = fname_output_format % fname |
|
546 | fname_output_line = fname_output_format % fname | |
547 | result.append(fname_output_line) |
|
547 | result.append(fname_output_line) | |
548 | return result |
|
548 | return result | |
549 | return f |
|
549 | return f | |
550 |
|
550 | |||
551 | def _get_notebook_display_formatter(self, |
|
551 | def _get_notebook_display_formatter(self, | |
552 | spacer=" "): |
|
552 | spacer=" "): | |
553 | """ generate function to use for notebook formatting |
|
553 | """ generate function to use for notebook formatting | |
554 | """ |
|
554 | """ | |
555 | dirname_output_format = \ |
|
555 | dirname_output_format = \ | |
556 | self.result_html_prefix + "%s/" + self.result_html_suffix |
|
556 | self.result_html_prefix + "%s/" + self.result_html_suffix | |
557 | fname_output_format = \ |
|
557 | fname_output_format = \ | |
558 | self.result_html_prefix + spacer + self.html_link_str + self.result_html_suffix |
|
558 | self.result_html_prefix + spacer + self.html_link_str + self.result_html_suffix | |
559 | fp_format = self.url_prefix + '%s/%s' |
|
559 | fp_format = self.url_prefix + '%s/%s' | |
560 | if sep == "\\": |
|
560 | if sep == "\\": | |
561 | # Working on a platform where the path separator is "\", so |
|
561 | # Working on a platform where the path separator is "\", so | |
562 | # must convert these to "/" for generating a URI |
|
562 | # must convert these to "/" for generating a URI | |
563 | def fp_cleaner(fp): |
|
563 | def fp_cleaner(fp): | |
564 | # Replace all occurrences of backslash ("\") with a forward |
|
564 | # Replace all occurrences of backslash ("\") with a forward | |
565 | # slash ("/") - this is necessary on windows when a path is |
|
565 | # slash ("/") - this is necessary on windows when a path is | |
566 | # provided as input, but we must link to a URI |
|
566 | # provided as input, but we must link to a URI | |
567 | return fp.replace('\\','/') |
|
567 | return fp.replace('\\','/') | |
568 | else: |
|
568 | else: | |
569 | fp_cleaner = None |
|
569 | fp_cleaner = None | |
570 |
|
570 | |||
571 | return self._get_display_formatter(dirname_output_format, |
|
571 | return self._get_display_formatter(dirname_output_format, | |
572 | fname_output_format, |
|
572 | fname_output_format, | |
573 | fp_format, |
|
573 | fp_format, | |
574 | fp_cleaner) |
|
574 | fp_cleaner) | |
575 |
|
575 | |||
576 | def _get_terminal_display_formatter(self, |
|
576 | def _get_terminal_display_formatter(self, | |
577 | spacer=" "): |
|
577 | spacer=" "): | |
578 | """ generate function to use for terminal formatting |
|
578 | """ generate function to use for terminal formatting | |
579 | """ |
|
579 | """ | |
580 | dirname_output_format = "%s/" |
|
580 | dirname_output_format = "%s/" | |
581 | fname_output_format = spacer + "%s" |
|
581 | fname_output_format = spacer + "%s" | |
582 | fp_format = '%s/%s' |
|
582 | fp_format = '%s/%s' | |
583 |
|
583 | |||
584 | return self._get_display_formatter(dirname_output_format, |
|
584 | return self._get_display_formatter(dirname_output_format, | |
585 | fname_output_format, |
|
585 | fname_output_format, | |
586 | fp_format) |
|
586 | fp_format) | |
587 |
|
587 | |||
588 | def _format_path(self): |
|
588 | def _format_path(self): | |
589 | result_lines = [] |
|
589 | result_lines = [] | |
590 | if self.recursive: |
|
590 | if self.recursive: | |
591 | walked_dir = list(walk(self.path)) |
|
591 | walked_dir = list(walk(self.path)) | |
592 | else: |
|
592 | else: | |
593 | walked_dir = [next(walk(self.path))] |
|
593 | walked_dir = [next(walk(self.path))] | |
594 | walked_dir.sort() |
|
594 | walked_dir.sort() | |
595 | for dirname, subdirs, fnames in walked_dir: |
|
595 | for dirname, subdirs, fnames in walked_dir: | |
596 | result_lines += self.notebook_display_formatter(dirname, fnames, self.included_suffixes) |
|
596 | result_lines += self.notebook_display_formatter(dirname, fnames, self.included_suffixes) | |
597 | return '\n'.join(result_lines) |
|
597 | return '\n'.join(result_lines) | |
598 |
|
598 | |||
599 | def __repr__(self): |
|
599 | def __repr__(self): | |
600 | """return newline-separated absolute paths |
|
600 | """return newline-separated absolute paths | |
601 | """ |
|
601 | """ | |
602 | result_lines = [] |
|
602 | result_lines = [] | |
603 | if self.recursive: |
|
603 | if self.recursive: | |
604 | walked_dir = list(walk(self.path)) |
|
604 | walked_dir = list(walk(self.path)) | |
605 | else: |
|
605 | else: | |
606 | walked_dir = [next(walk(self.path))] |
|
606 | walked_dir = [next(walk(self.path))] | |
607 | walked_dir.sort() |
|
607 | walked_dir.sort() | |
608 | for dirname, subdirs, fnames in walked_dir: |
|
608 | for dirname, subdirs, fnames in walked_dir: | |
609 | result_lines += self.terminal_display_formatter(dirname, fnames, self.included_suffixes) |
|
609 | result_lines += self.terminal_display_formatter(dirname, fnames, self.included_suffixes) | |
610 | return '\n'.join(result_lines) |
|
610 | return '\n'.join(result_lines) | |
611 |
|
611 | |||
612 |
|
612 | |||
613 | class Code(TextDisplayObject): |
|
613 | class Code(TextDisplayObject): | |
614 | """Display syntax-highlighted source code. |
|
614 | """Display syntax-highlighted source code. | |
615 |
|
615 | |||
616 | This uses Pygments to highlight the code for HTML and Latex output. |
|
616 | This uses Pygments to highlight the code for HTML and Latex output. | |
617 |
|
617 | |||
618 | Parameters |
|
618 | Parameters | |
619 | ---------- |
|
619 | ---------- | |
620 | data : str |
|
620 | data : str | |
621 | The code as a string |
|
621 | The code as a string | |
622 | url : str |
|
622 | url : str | |
623 | A URL to fetch the code from |
|
623 | A URL to fetch the code from | |
624 | filename : str |
|
624 | filename : str | |
625 | A local filename to load the code from |
|
625 | A local filename to load the code from | |
626 | language : str |
|
626 | language : str | |
627 | The short name of a Pygments lexer to use for highlighting. |
|
627 | The short name of a Pygments lexer to use for highlighting. | |
628 | If not specified, it will guess the lexer based on the filename |
|
628 | If not specified, it will guess the lexer based on the filename | |
629 | or the code. Available lexers: http://pygments.org/docs/lexers/ |
|
629 | or the code. Available lexers: http://pygments.org/docs/lexers/ | |
630 | """ |
|
630 | """ | |
631 | def __init__(self, data=None, url=None, filename=None, language=None): |
|
631 | def __init__(self, data=None, url=None, filename=None, language=None): | |
632 | self.language = language |
|
632 | self.language = language | |
633 | super().__init__(data=data, url=url, filename=filename) |
|
633 | super().__init__(data=data, url=url, filename=filename) | |
634 |
|
634 | |||
635 | def _get_lexer(self): |
|
635 | def _get_lexer(self): | |
636 | if self.language: |
|
636 | if self.language: | |
637 | from pygments.lexers import get_lexer_by_name |
|
637 | from pygments.lexers import get_lexer_by_name | |
638 | return get_lexer_by_name(self.language) |
|
638 | return get_lexer_by_name(self.language) | |
639 | elif self.filename: |
|
639 | elif self.filename: | |
640 | from pygments.lexers import get_lexer_for_filename |
|
640 | from pygments.lexers import get_lexer_for_filename | |
641 | return get_lexer_for_filename(self.filename) |
|
641 | return get_lexer_for_filename(self.filename) | |
642 | else: |
|
642 | else: | |
643 | from pygments.lexers import guess_lexer |
|
643 | from pygments.lexers import guess_lexer | |
644 | return guess_lexer(self.data) |
|
644 | return guess_lexer(self.data) | |
645 |
|
645 | |||
646 | def __repr__(self): |
|
646 | def __repr__(self): | |
647 | return self.data |
|
647 | return self.data | |
648 |
|
648 | |||
649 | def _repr_html_(self): |
|
649 | def _repr_html_(self): | |
650 | from pygments import highlight |
|
650 | from pygments import highlight | |
651 | from pygments.formatters import HtmlFormatter |
|
651 | from pygments.formatters import HtmlFormatter | |
652 | fmt = HtmlFormatter() |
|
652 | fmt = HtmlFormatter() | |
653 | style = '<style>{}</style>'.format(fmt.get_style_defs('.output_html')) |
|
653 | style = '<style>{}</style>'.format(fmt.get_style_defs('.output_html')) | |
654 | return style + highlight(self.data, self._get_lexer(), fmt) |
|
654 | return style + highlight(self.data, self._get_lexer(), fmt) | |
655 |
|
655 | |||
656 | def _repr_latex_(self): |
|
656 | def _repr_latex_(self): | |
657 | from pygments import highlight |
|
657 | from pygments import highlight | |
658 | from pygments.formatters import LatexFormatter |
|
658 | from pygments.formatters import LatexFormatter | |
659 | return highlight(self.data, self._get_lexer(), LatexFormatter()) |
|
659 | return highlight(self.data, self._get_lexer(), LatexFormatter()) |
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