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1 | """Extra magics for terminal use.""" |
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1 | """Extra magics for terminal use.""" | |
2 |
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2 | |||
3 | # Copyright (c) IPython Development Team. |
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3 | # Copyright (c) IPython Development Team. | |
4 | # Distributed under the terms of the Modified BSD License. |
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4 | # Distributed under the terms of the Modified BSD License. | |
5 |
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5 | |||
6 |
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6 | |||
7 | from logging import error |
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7 | from logging import error | |
8 | import os |
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8 | import os | |
9 | import sys |
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9 | import sys | |
10 |
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10 | |||
11 | from IPython.core.error import TryNext, UsageError |
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11 | from IPython.core.error import TryNext, UsageError | |
12 | from IPython.core.inputsplitter import IPythonInputSplitter |
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12 | from IPython.core.inputsplitter import IPythonInputSplitter | |
13 | from IPython.core.magic import Magics, magics_class, line_magic |
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13 | from IPython.core.magic import Magics, magics_class, line_magic | |
14 | from IPython.lib.clipboard import ClipboardEmpty |
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14 | from IPython.lib.clipboard import ClipboardEmpty | |
15 | from IPython.utils.text import SList, strip_email_quotes |
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15 | from IPython.utils.text import SList, strip_email_quotes | |
16 | from IPython.utils import py3compat |
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16 | from IPython.utils import py3compat | |
17 |
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17 | |||
18 | def get_pasted_lines(sentinel, l_input=py3compat.input, quiet=False): |
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18 | def get_pasted_lines(sentinel, l_input=py3compat.input, quiet=False): | |
19 | """ Yield pasted lines until the user enters the given sentinel value. |
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19 | """ Yield pasted lines until the user enters the given sentinel value. | |
20 | """ |
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20 | """ | |
21 | if not quiet: |
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21 | if not quiet: | |
22 | print("Pasting code; enter '%s' alone on the line to stop or use Ctrl-D." \ |
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22 | print("Pasting code; enter '%s' alone on the line to stop or use Ctrl-D." \ | |
23 | % sentinel) |
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23 | % sentinel) | |
24 | prompt = ":" |
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24 | prompt = ":" | |
25 | else: |
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25 | else: | |
26 | prompt = "" |
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26 | prompt = "" | |
27 | while True: |
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27 | while True: | |
28 | try: |
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28 | try: | |
29 | l = l_input(prompt) |
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29 | l = l_input(prompt) | |
30 | if l == sentinel: |
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30 | if l == sentinel: | |
31 | return |
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31 | return | |
32 | else: |
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32 | else: | |
33 | yield l |
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33 | yield l | |
34 | except EOFError: |
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34 | except EOFError: | |
35 | print('<EOF>') |
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35 | print('<EOF>') | |
36 | return |
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36 | return | |
37 |
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37 | |||
38 |
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38 | |||
39 | @magics_class |
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39 | @magics_class | |
40 | class TerminalMagics(Magics): |
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40 | class TerminalMagics(Magics): | |
41 | def __init__(self, shell): |
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41 | def __init__(self, shell): | |
42 | super(TerminalMagics, self).__init__(shell) |
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42 | super(TerminalMagics, self).__init__(shell) | |
43 | self.input_splitter = IPythonInputSplitter() |
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43 | self.input_splitter = IPythonInputSplitter() | |
44 |
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44 | |||
45 | def store_or_execute(self, block, name): |
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45 | def store_or_execute(self, block, name): | |
46 | """ Execute a block, or store it in a variable, per the user's request. |
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46 | """ Execute a block, or store it in a variable, per the user's request. | |
47 | """ |
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47 | """ | |
48 | if name: |
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48 | if name: | |
49 | # If storing it for further editing |
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49 | # If storing it for further editing | |
50 | self.shell.user_ns[name] = SList(block.splitlines()) |
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50 | self.shell.user_ns[name] = SList(block.splitlines()) | |
51 | print("Block assigned to '%s'" % name) |
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51 | print("Block assigned to '%s'" % name) | |
52 | else: |
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52 | else: | |
53 | b = self.preclean_input(block) |
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53 | b = self.preclean_input(block) | |
54 | self.shell.user_ns['pasted_block'] = b |
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54 | self.shell.user_ns['pasted_block'] = b | |
55 | self.shell.using_paste_magics = True |
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55 | self.shell.using_paste_magics = True | |
56 | try: |
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56 | try: | |
57 | self.shell.run_cell(b) |
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57 | self.shell.run_cell(b) | |
58 | finally: |
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58 | finally: | |
59 | self.shell.using_paste_magics = False |
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59 | self.shell.using_paste_magics = False | |
60 |
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60 | |||
61 | def preclean_input(self, block): |
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61 | def preclean_input(self, block): | |
62 | lines = block.splitlines() |
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62 | lines = block.splitlines() | |
63 | while lines and not lines[0].strip(): |
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63 | while lines and not lines[0].strip(): | |
64 | lines = lines[1:] |
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64 | lines = lines[1:] | |
65 | return strip_email_quotes('\n'.join(lines)) |
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65 | return strip_email_quotes('\n'.join(lines)) | |
66 |
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66 | |||
67 | def rerun_pasted(self, name='pasted_block'): |
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67 | def rerun_pasted(self, name='pasted_block'): | |
68 | """ Rerun a previously pasted command. |
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68 | """ Rerun a previously pasted command. | |
69 | """ |
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69 | """ | |
70 | b = self.shell.user_ns.get(name) |
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70 | b = self.shell.user_ns.get(name) | |
71 |
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71 | |||
72 | # Sanity checks |
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72 | # Sanity checks | |
73 | if b is None: |
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73 | if b is None: | |
74 | raise UsageError('No previous pasted block available') |
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74 | raise UsageError('No previous pasted block available') | |
75 | if not isinstance(b, str): |
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75 | if not isinstance(b, str): | |
76 | raise UsageError( |
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76 | raise UsageError( | |
77 | "Variable 'pasted_block' is not a string, can't execute") |
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77 | "Variable 'pasted_block' is not a string, can't execute") | |
78 |
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78 | |||
79 | print("Re-executing '%s...' (%d chars)"% (b.split('\n',1)[0], len(b))) |
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79 | print("Re-executing '%s...' (%d chars)"% (b.split('\n',1)[0], len(b))) | |
80 | self.shell.run_cell(b) |
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80 | self.shell.run_cell(b) | |
81 |
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81 | |||
82 | @line_magic |
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82 | @line_magic | |
83 | def autoindent(self, parameter_s = ''): |
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83 | def autoindent(self, parameter_s = ''): | |
84 | """Toggle autoindent on/off (deprecated)""" |
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84 | """Toggle autoindent on/off (deprecated)""" | |
85 |
print("%autoindent is deprecated: you can now paste |
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85 | print("%autoindent is deprecated since IPython 5: you can now paste " | |
86 | "without turning autoindentation off.") |
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86 | "multiple lines without turning autoindentation off.") | |
87 | self.shell.set_autoindent() |
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87 | self.shell.set_autoindent() | |
88 | print("Automatic indentation is:",['OFF','ON'][self.shell.autoindent]) |
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88 | print("Automatic indentation is:",['OFF','ON'][self.shell.autoindent]) | |
89 |
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89 | |||
90 | @line_magic |
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90 | @line_magic | |
91 | def cpaste(self, parameter_s=''): |
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91 | def cpaste(self, parameter_s=''): | |
92 | """Paste & execute a pre-formatted code block from clipboard. |
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92 | """Paste & execute a pre-formatted code block from clipboard. | |
93 |
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93 | |||
94 | You must terminate the block with '--' (two minus-signs) or Ctrl-D |
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94 | You must terminate the block with '--' (two minus-signs) or Ctrl-D | |
95 | alone on the line. You can also provide your own sentinel with '%paste |
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95 | alone on the line. You can also provide your own sentinel with '%paste | |
96 | -s %%' ('%%' is the new sentinel for this operation). |
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96 | -s %%' ('%%' is the new sentinel for this operation). | |
97 |
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97 | |||
98 | The block is dedented prior to execution to enable execution of method |
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98 | The block is dedented prior to execution to enable execution of method | |
99 | definitions. '>' and '+' characters at the beginning of a line are |
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99 | definitions. '>' and '+' characters at the beginning of a line are | |
100 | ignored, to allow pasting directly from e-mails, diff files and |
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100 | ignored, to allow pasting directly from e-mails, diff files and | |
101 | doctests (the '...' continuation prompt is also stripped). The |
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101 | doctests (the '...' continuation prompt is also stripped). The | |
102 | executed block is also assigned to variable named 'pasted_block' for |
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102 | executed block is also assigned to variable named 'pasted_block' for | |
103 | later editing with '%edit pasted_block'. |
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103 | later editing with '%edit pasted_block'. | |
104 |
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104 | |||
105 | You can also pass a variable name as an argument, e.g. '%cpaste foo'. |
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105 | You can also pass a variable name as an argument, e.g. '%cpaste foo'. | |
106 | This assigns the pasted block to variable 'foo' as string, without |
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106 | This assigns the pasted block to variable 'foo' as string, without | |
107 | dedenting or executing it (preceding >>> and + is still stripped) |
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107 | dedenting or executing it (preceding >>> and + is still stripped) | |
108 |
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108 | |||
109 | '%cpaste -r' re-executes the block previously entered by cpaste. |
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109 | '%cpaste -r' re-executes the block previously entered by cpaste. | |
110 | '%cpaste -q' suppresses any additional output messages. |
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110 | '%cpaste -q' suppresses any additional output messages. | |
111 |
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111 | |||
112 | Do not be alarmed by garbled output on Windows (it's a readline bug). |
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112 | Do not be alarmed by garbled output on Windows (it's a readline bug). | |
113 | Just press enter and type -- (and press enter again) and the block |
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113 | Just press enter and type -- (and press enter again) and the block | |
114 | will be what was just pasted. |
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114 | will be what was just pasted. | |
115 |
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115 | |||
116 | IPython statements (magics, shell escapes) are not supported (yet). |
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116 | IPython statements (magics, shell escapes) are not supported (yet). | |
117 |
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117 | |||
118 | See also |
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118 | See also | |
119 | -------- |
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119 | -------- | |
120 | paste: automatically pull code from clipboard. |
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120 | paste: automatically pull code from clipboard. | |
121 |
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121 | |||
122 | Examples |
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122 | Examples | |
123 | -------- |
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123 | -------- | |
124 | :: |
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124 | :: | |
125 |
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125 | |||
126 | In [8]: %cpaste |
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126 | In [8]: %cpaste | |
127 | Pasting code; enter '--' alone on the line to stop. |
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127 | Pasting code; enter '--' alone on the line to stop. | |
128 | :>>> a = ["world!", "Hello"] |
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128 | :>>> a = ["world!", "Hello"] | |
129 | :>>> print " ".join(sorted(a)) |
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129 | :>>> print " ".join(sorted(a)) | |
130 | :-- |
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130 | :-- | |
131 | Hello world! |
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131 | Hello world! | |
132 | """ |
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132 | """ | |
133 | opts, name = self.parse_options(parameter_s, 'rqs:', mode='string') |
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133 | opts, name = self.parse_options(parameter_s, 'rqs:', mode='string') | |
134 | if 'r' in opts: |
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134 | if 'r' in opts: | |
135 | self.rerun_pasted() |
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135 | self.rerun_pasted() | |
136 | return |
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136 | return | |
137 |
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137 | |||
138 | quiet = ('q' in opts) |
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138 | quiet = ('q' in opts) | |
139 |
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139 | |||
140 | sentinel = opts.get('s', u'--') |
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140 | sentinel = opts.get('s', u'--') | |
141 | block = '\n'.join(get_pasted_lines(sentinel, quiet=quiet)) |
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141 | block = '\n'.join(get_pasted_lines(sentinel, quiet=quiet)) | |
142 | self.store_or_execute(block, name) |
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142 | self.store_or_execute(block, name) | |
143 |
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143 | |||
144 | @line_magic |
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144 | @line_magic | |
145 | def paste(self, parameter_s=''): |
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145 | def paste(self, parameter_s=''): | |
146 | """Paste & execute a pre-formatted code block from clipboard. |
|
146 | """Paste & execute a pre-formatted code block from clipboard. | |
147 |
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147 | |||
148 | The text is pulled directly from the clipboard without user |
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148 | The text is pulled directly from the clipboard without user | |
149 | intervention and printed back on the screen before execution (unless |
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149 | intervention and printed back on the screen before execution (unless | |
150 | the -q flag is given to force quiet mode). |
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150 | the -q flag is given to force quiet mode). | |
151 |
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151 | |||
152 | The block is dedented prior to execution to enable execution of method |
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152 | The block is dedented prior to execution to enable execution of method | |
153 | definitions. '>' and '+' characters at the beginning of a line are |
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153 | definitions. '>' and '+' characters at the beginning of a line are | |
154 | ignored, to allow pasting directly from e-mails, diff files and |
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154 | ignored, to allow pasting directly from e-mails, diff files and | |
155 | doctests (the '...' continuation prompt is also stripped). The |
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155 | doctests (the '...' continuation prompt is also stripped). The | |
156 | executed block is also assigned to variable named 'pasted_block' for |
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156 | executed block is also assigned to variable named 'pasted_block' for | |
157 | later editing with '%edit pasted_block'. |
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157 | later editing with '%edit pasted_block'. | |
158 |
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158 | |||
159 | You can also pass a variable name as an argument, e.g. '%paste foo'. |
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159 | You can also pass a variable name as an argument, e.g. '%paste foo'. | |
160 | This assigns the pasted block to variable 'foo' as string, without |
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160 | This assigns the pasted block to variable 'foo' as string, without | |
161 | executing it (preceding >>> and + is still stripped). |
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161 | executing it (preceding >>> and + is still stripped). | |
162 |
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162 | |||
163 | Options: |
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163 | Options: | |
164 |
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164 | |||
165 | -r: re-executes the block previously entered by cpaste. |
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165 | -r: re-executes the block previously entered by cpaste. | |
166 |
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166 | |||
167 | -q: quiet mode: do not echo the pasted text back to the terminal. |
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167 | -q: quiet mode: do not echo the pasted text back to the terminal. | |
168 |
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168 | |||
169 | IPython statements (magics, shell escapes) are not supported (yet). |
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169 | IPython statements (magics, shell escapes) are not supported (yet). | |
170 |
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170 | |||
171 | See also |
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171 | See also | |
172 | -------- |
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172 | -------- | |
173 | cpaste: manually paste code into terminal until you mark its end. |
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173 | cpaste: manually paste code into terminal until you mark its end. | |
174 | """ |
|
174 | """ | |
175 | opts, name = self.parse_options(parameter_s, 'rq', mode='string') |
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175 | opts, name = self.parse_options(parameter_s, 'rq', mode='string') | |
176 | if 'r' in opts: |
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176 | if 'r' in opts: | |
177 | self.rerun_pasted() |
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177 | self.rerun_pasted() | |
178 | return |
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178 | return | |
179 | try: |
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179 | try: | |
180 | block = self.shell.hooks.clipboard_get() |
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180 | block = self.shell.hooks.clipboard_get() | |
181 | except TryNext as clipboard_exc: |
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181 | except TryNext as clipboard_exc: | |
182 | message = getattr(clipboard_exc, 'args') |
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182 | message = getattr(clipboard_exc, 'args') | |
183 | if message: |
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183 | if message: | |
184 | error(message[0]) |
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184 | error(message[0]) | |
185 | else: |
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185 | else: | |
186 | error('Could not get text from the clipboard.') |
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186 | error('Could not get text from the clipboard.') | |
187 | return |
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187 | return | |
188 | except ClipboardEmpty: |
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188 | except ClipboardEmpty: | |
189 | raise UsageError("The clipboard appears to be empty") |
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189 | raise UsageError("The clipboard appears to be empty") | |
190 |
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190 | |||
191 | # By default, echo back to terminal unless quiet mode is requested |
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191 | # By default, echo back to terminal unless quiet mode is requested | |
192 | if 'q' not in opts: |
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192 | if 'q' not in opts: | |
193 | write = self.shell.write |
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193 | write = self.shell.write | |
194 | write(self.shell.pycolorize(block)) |
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194 | write(self.shell.pycolorize(block)) | |
195 | if not block.endswith('\n'): |
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195 | if not block.endswith('\n'): | |
196 | write('\n') |
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196 | write('\n') | |
197 | write("## -- End pasted text --\n") |
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197 | write("## -- End pasted text --\n") | |
198 |
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198 | |||
199 | self.store_or_execute(block, name) |
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199 | self.store_or_execute(block, name) | |
200 |
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200 | |||
201 | # Class-level: add a '%cls' magic only on Windows |
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201 | # Class-level: add a '%cls' magic only on Windows | |
202 | if sys.platform == 'win32': |
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202 | if sys.platform == 'win32': | |
203 | @line_magic |
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203 | @line_magic | |
204 | def cls(self, s): |
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204 | def cls(self, s): | |
205 | """Clear screen. |
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205 | """Clear screen. | |
206 | """ |
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206 | """ | |
207 | os.system("cls") |
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207 | os.system("cls") |
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