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@@ -1,307 +1,312 b'' | |||||
1 | """Implementation of magic functions related to History. |
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1 | """Implementation of magic functions related to History. | |
2 | """ |
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2 | """ | |
3 | #----------------------------------------------------------------------------- |
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3 | #----------------------------------------------------------------------------- | |
4 | # Copyright (c) 2012, IPython Development Team. |
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4 | # Copyright (c) 2012, IPython Development Team. | |
5 | # |
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5 | # | |
6 | # Distributed under the terms of the Modified BSD License. |
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6 | # Distributed under the terms of the Modified BSD License. | |
7 | # |
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7 | # | |
8 | # The full license is in the file COPYING.txt, distributed with this software. |
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8 | # The full license is in the file COPYING.txt, distributed with this software. | |
9 | #----------------------------------------------------------------------------- |
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9 | #----------------------------------------------------------------------------- | |
10 |
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10 | |||
11 | #----------------------------------------------------------------------------- |
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11 | #----------------------------------------------------------------------------- | |
12 | # Imports |
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12 | # Imports | |
13 | #----------------------------------------------------------------------------- |
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13 | #----------------------------------------------------------------------------- | |
14 | from __future__ import print_function |
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14 | from __future__ import print_function | |
15 |
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15 | |||
16 | # Stdlib |
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16 | # Stdlib | |
17 | import os |
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17 | import os | |
18 | from io import open as io_open |
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18 | from io import open as io_open | |
19 | from IPython.external.argparse import Action |
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19 | from IPython.external.argparse import Action | |
20 |
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20 | |||
21 | # Our own packages |
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21 | # Our own packages | |
22 | from IPython.core.error import StdinNotImplementedError |
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22 | from IPython.core.error import StdinNotImplementedError | |
23 | from IPython.core.magic import Magics, magics_class, line_magic |
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23 | from IPython.core.magic import Magics, magics_class, line_magic | |
24 | from IPython.core.magic_arguments import (argument, magic_arguments, |
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24 | from IPython.core.magic_arguments import (argument, magic_arguments, | |
25 | parse_argstring) |
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25 | parse_argstring) | |
26 | from IPython.testing.skipdoctest import skip_doctest |
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26 | from IPython.testing.skipdoctest import skip_doctest | |
27 | from IPython.utils import io |
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27 | from IPython.utils import io | |
28 |
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28 | |||
29 | #----------------------------------------------------------------------------- |
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29 | #----------------------------------------------------------------------------- | |
30 | # Magics class implementation |
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30 | # Magics class implementation | |
31 | #----------------------------------------------------------------------------- |
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31 | #----------------------------------------------------------------------------- | |
32 |
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32 | |||
33 |
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33 | |||
34 | _unspecified = object() |
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34 | _unspecified = object() | |
35 |
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35 | |||
36 |
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36 | |||
37 | @magics_class |
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37 | @magics_class | |
38 | class HistoryMagics(Magics): |
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38 | class HistoryMagics(Magics): | |
39 |
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39 | |||
40 | @magic_arguments() |
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40 | @magic_arguments() | |
41 | @argument( |
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41 | @argument( | |
42 | '-n', dest='print_nums', action='store_true', default=False, |
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42 | '-n', dest='print_nums', action='store_true', default=False, | |
43 | help=""" |
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43 | help=""" | |
44 | print line numbers for each input. |
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44 | print line numbers for each input. | |
45 | This feature is only available if numbered prompts are in use. |
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45 | This feature is only available if numbered prompts are in use. | |
46 | """) |
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46 | """) | |
47 | @argument( |
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47 | @argument( | |
48 | '-o', dest='get_output', action='store_true', default=False, |
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48 | '-o', dest='get_output', action='store_true', default=False, | |
49 | help="also print outputs for each input.") |
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49 | help="also print outputs for each input.") | |
50 | @argument( |
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50 | @argument( | |
51 | '-p', dest='pyprompts', action='store_true', default=False, |
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51 | '-p', dest='pyprompts', action='store_true', default=False, | |
52 | help=""" |
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52 | help=""" | |
53 | print classic '>>>' python prompts before each input. |
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53 | print classic '>>>' python prompts before each input. | |
54 | This is useful for making documentation, and in conjunction |
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54 | This is useful for making documentation, and in conjunction | |
55 | with -o, for producing doctest-ready output. |
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55 | with -o, for producing doctest-ready output. | |
56 | """) |
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56 | """) | |
57 | @argument( |
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57 | @argument( | |
58 | '-t', dest='raw', action='store_false', default=True, |
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58 | '-t', dest='raw', action='store_false', default=True, | |
59 | help=""" |
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59 | help=""" | |
60 | print the 'translated' history, as IPython understands it. |
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60 | print the 'translated' history, as IPython understands it. | |
61 | IPython filters your input and converts it all into valid Python |
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61 | IPython filters your input and converts it all into valid Python | |
62 | source before executing it (things like magics or aliases are turned |
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62 | source before executing it (things like magics or aliases are turned | |
63 | into function calls, for example). With this option, you'll see the |
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63 | into function calls, for example). With this option, you'll see the | |
64 | native history instead of the user-entered version: '%%cd /' will be |
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64 | native history instead of the user-entered version: '%%cd /' will be | |
65 | seen as 'get_ipython().magic("%%cd /")' instead of '%%cd /'. |
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65 | seen as 'get_ipython().magic("%%cd /")' instead of '%%cd /'. | |
66 | """) |
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66 | """) | |
67 | @argument( |
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67 | @argument( | |
68 | '-f', dest='filename', |
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68 | '-f', dest='filename', | |
69 | help=""" |
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69 | help=""" | |
70 | FILENAME: instead of printing the output to the screen, redirect |
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70 | FILENAME: instead of printing the output to the screen, redirect | |
71 | it to the given file. The file is always overwritten, though *when |
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71 | it to the given file. The file is always overwritten, though *when | |
72 | it can*, IPython asks for confirmation first. In particular, running |
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72 | it can*, IPython asks for confirmation first. In particular, running | |
73 | the command 'history -f FILENAME' from the IPython Notebook |
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73 | the command 'history -f FILENAME' from the IPython Notebook | |
74 | interface will replace FILENAME even if it already exists *without* |
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74 | interface will replace FILENAME even if it already exists *without* | |
75 | confirmation. |
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75 | confirmation. | |
76 | """) |
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76 | """) | |
77 | @argument( |
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77 | @argument( | |
78 | '-g', dest='pattern', nargs='*', default=None, |
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78 | '-g', dest='pattern', nargs='*', default=None, | |
79 | help=""" |
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79 | help=""" | |
80 | treat the arg as a glob pattern to search for in (full) history. |
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80 | treat the arg as a glob pattern to search for in (full) history. | |
81 | This includes the saved history (almost all commands ever written). |
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81 | This includes the saved history (almost all commands ever written). | |
82 | The pattern may contain '?' to match one unknown character and '*' |
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82 | The pattern may contain '?' to match one unknown character and '*' | |
83 | to match any number of unknown characters. Use '%%hist -g' to show |
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83 | to match any number of unknown characters. Use '%%hist -g' to show | |
84 | full saved history (may be very long). |
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84 | full saved history (may be very long). | |
85 | """) |
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85 | """) | |
86 | @argument( |
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86 | @argument( | |
87 | '-l', dest='limit', type=int, nargs='?', default=_unspecified, |
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87 | '-l', dest='limit', type=int, nargs='?', default=_unspecified, | |
88 | help=""" |
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88 | help=""" | |
89 | get the last n lines from all sessions. Specify n as a single |
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89 | get the last n lines from all sessions. Specify n as a single | |
90 | arg, or the default is the last 10 lines. |
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90 | arg, or the default is the last 10 lines. | |
91 | """) |
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91 | """) | |
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92 | @argument( | |||
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93 | '-u', dest='unique', action='store_true', | |||
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94 | help=""" | |||
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95 | when searching history using `-g`, show only unique history. | |||
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96 | """) | |||
92 | @argument('range', nargs='*') |
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97 | @argument('range', nargs='*') | |
93 | @skip_doctest |
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98 | @skip_doctest | |
94 | @line_magic |
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99 | @line_magic | |
95 | def history(self, parameter_s = ''): |
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100 | def history(self, parameter_s = ''): | |
96 | """Print input history (_i<n> variables), with most recent last. |
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101 | """Print input history (_i<n> variables), with most recent last. | |
97 |
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102 | |||
98 | By default, input history is printed without line numbers so it can be |
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103 | By default, input history is printed without line numbers so it can be | |
99 | directly pasted into an editor. Use -n to show them. |
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104 | directly pasted into an editor. Use -n to show them. | |
100 |
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105 | |||
101 | By default, all input history from the current session is displayed. |
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106 | By default, all input history from the current session is displayed. | |
102 | Ranges of history can be indicated using the syntax: |
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107 | Ranges of history can be indicated using the syntax: | |
103 | 4 : Line 4, current session |
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108 | 4 : Line 4, current session | |
104 | 4-6 : Lines 4-6, current session |
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109 | 4-6 : Lines 4-6, current session | |
105 | 243/1-5: Lines 1-5, session 243 |
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110 | 243/1-5: Lines 1-5, session 243 | |
106 | ~2/7 : Line 7, session 2 before current |
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111 | ~2/7 : Line 7, session 2 before current | |
107 | ~8/1-~6/5 : From the first line of 8 sessions ago, to the fifth line |
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112 | ~8/1-~6/5 : From the first line of 8 sessions ago, to the fifth line | |
108 | of 6 sessions ago. |
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113 | of 6 sessions ago. | |
109 | Multiple ranges can be entered, separated by spaces |
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114 | Multiple ranges can be entered, separated by spaces | |
110 |
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115 | |||
111 | The same syntax is used by %macro, %save, %edit, %rerun |
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116 | The same syntax is used by %macro, %save, %edit, %rerun | |
112 |
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117 | |||
113 | Examples |
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118 | Examples | |
114 | -------- |
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119 | -------- | |
115 | :: |
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120 | :: | |
116 |
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121 | |||
117 | In [6]: %history -n 4-6 |
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122 | In [6]: %history -n 4-6 | |
118 | 4:a = 12 |
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123 | 4:a = 12 | |
119 | 5:print a**2 |
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124 | 5:print a**2 | |
120 | 6:%history -n 4-6 |
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125 | 6:%history -n 4-6 | |
121 |
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126 | |||
122 | """ |
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127 | """ | |
123 |
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128 | |||
124 | args = parse_argstring(self.history, parameter_s) |
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129 | args = parse_argstring(self.history, parameter_s) | |
125 |
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130 | |||
126 | # For brevity |
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131 | # For brevity | |
127 | history_manager = self.shell.history_manager |
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132 | history_manager = self.shell.history_manager | |
128 |
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133 | |||
129 | def _format_lineno(session, line): |
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134 | def _format_lineno(session, line): | |
130 | """Helper function to format line numbers properly.""" |
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135 | """Helper function to format line numbers properly.""" | |
131 | if session in (0, history_manager.session_number): |
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136 | if session in (0, history_manager.session_number): | |
132 | return str(line) |
|
137 | return str(line) | |
133 | return "%s/%s" % (session, line) |
|
138 | return "%s/%s" % (session, line) | |
134 |
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139 | |||
135 | # Check if output to specific file was requested. |
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140 | # Check if output to specific file was requested. | |
136 | outfname = args.filename |
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141 | outfname = args.filename | |
137 | if not outfname: |
|
142 | if not outfname: | |
138 | outfile = io.stdout # default |
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143 | outfile = io.stdout # default | |
139 | # We don't want to close stdout at the end! |
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144 | # We don't want to close stdout at the end! | |
140 | close_at_end = False |
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145 | close_at_end = False | |
141 | else: |
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146 | else: | |
142 | if os.path.exists(outfname): |
|
147 | if os.path.exists(outfname): | |
143 | try: |
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148 | try: | |
144 | ans = io.ask_yes_no("File %r exists. Overwrite?" % outfname) |
|
149 | ans = io.ask_yes_no("File %r exists. Overwrite?" % outfname) | |
145 | except StdinNotImplementedError: |
|
150 | except StdinNotImplementedError: | |
146 | ans = True |
|
151 | ans = True | |
147 | if not ans: |
|
152 | if not ans: | |
148 | print('Aborting.') |
|
153 | print('Aborting.') | |
149 | return |
|
154 | return | |
150 | print("Overwriting file.") |
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155 | print("Overwriting file.") | |
151 | outfile = io_open(outfname, 'w', encoding='utf-8') |
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156 | outfile = io_open(outfname, 'w', encoding='utf-8') | |
152 | close_at_end = True |
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157 | close_at_end = True | |
153 |
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158 | |||
154 | print_nums = args.print_nums |
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159 | print_nums = args.print_nums | |
155 | get_output = args.get_output |
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160 | get_output = args.get_output | |
156 | pyprompts = args.pyprompts |
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161 | pyprompts = args.pyprompts | |
157 | raw = args.raw |
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162 | raw = args.raw | |
158 |
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163 | |||
159 | pattern = None |
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164 | pattern = None | |
160 | limit = None if args.limit is _unspecified else args.limit |
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165 | limit = None if args.limit is _unspecified else args.limit | |
161 |
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166 | |||
162 | if args.pattern is not None: |
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167 | if args.pattern is not None: | |
163 | if args.pattern: |
|
168 | if args.pattern: | |
164 | pattern = "*" + " ".join(args.pattern) + "*" |
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169 | pattern = "*" + " ".join(args.pattern) + "*" | |
165 | else: |
|
170 | else: | |
166 | pattern = "*" |
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171 | pattern = "*" | |
167 | hist = history_manager.search(pattern, raw=raw, output=get_output, |
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172 | hist = history_manager.search(pattern, raw=raw, output=get_output, | |
168 | n=limit) |
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173 | n=limit, unique=args.unique) | |
169 | print_nums = True |
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174 | print_nums = True | |
170 | elif args.limit is not _unspecified: |
|
175 | elif args.limit is not _unspecified: | |
171 | n = 10 if limit is None else limit |
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176 | n = 10 if limit is None else limit | |
172 | hist = history_manager.get_tail(n, raw=raw, output=get_output) |
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177 | hist = history_manager.get_tail(n, raw=raw, output=get_output) | |
173 | else: |
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178 | else: | |
174 | if args.range: # Get history by ranges |
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179 | if args.range: # Get history by ranges | |
175 | hist = history_manager.get_range_by_str(" ".join(args.range), |
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180 | hist = history_manager.get_range_by_str(" ".join(args.range), | |
176 | raw, get_output) |
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181 | raw, get_output) | |
177 | else: # Just get history for the current session |
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182 | else: # Just get history for the current session | |
178 | hist = history_manager.get_range(raw=raw, output=get_output) |
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183 | hist = history_manager.get_range(raw=raw, output=get_output) | |
179 |
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184 | |||
180 | # We could be displaying the entire history, so let's not try to pull |
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185 | # We could be displaying the entire history, so let's not try to pull | |
181 | # it into a list in memory. Anything that needs more space will just |
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186 | # it into a list in memory. Anything that needs more space will just | |
182 | # misalign. |
|
187 | # misalign. | |
183 | width = 4 |
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188 | width = 4 | |
184 |
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189 | |||
185 | for session, lineno, inline in hist: |
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190 | for session, lineno, inline in hist: | |
186 | # Print user history with tabs expanded to 4 spaces. The GUI |
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191 | # Print user history with tabs expanded to 4 spaces. The GUI | |
187 | # clients use hard tabs for easier usability in auto-indented code, |
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192 | # clients use hard tabs for easier usability in auto-indented code, | |
188 | # but we want to produce PEP-8 compliant history for safe pasting |
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193 | # but we want to produce PEP-8 compliant history for safe pasting | |
189 | # into an editor. |
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194 | # into an editor. | |
190 | if get_output: |
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195 | if get_output: | |
191 | inline, output = inline |
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196 | inline, output = inline | |
192 | inline = inline.expandtabs(4).rstrip() |
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197 | inline = inline.expandtabs(4).rstrip() | |
193 |
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198 | |||
194 | multiline = "\n" in inline |
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199 | multiline = "\n" in inline | |
195 | line_sep = '\n' if multiline else ' ' |
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200 | line_sep = '\n' if multiline else ' ' | |
196 | if print_nums: |
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201 | if print_nums: | |
197 | print(u'%s:%s' % (_format_lineno(session, lineno).rjust(width), |
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202 | print(u'%s:%s' % (_format_lineno(session, lineno).rjust(width), | |
198 | line_sep), file=outfile, end=u'') |
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203 | line_sep), file=outfile, end=u'') | |
199 | if pyprompts: |
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204 | if pyprompts: | |
200 | print(u">>> ", end=u"", file=outfile) |
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205 | print(u">>> ", end=u"", file=outfile) | |
201 | if multiline: |
|
206 | if multiline: | |
202 | inline = "\n... ".join(inline.splitlines()) + "\n..." |
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207 | inline = "\n... ".join(inline.splitlines()) + "\n..." | |
203 | print(inline, file=outfile) |
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208 | print(inline, file=outfile) | |
204 | if get_output and output: |
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209 | if get_output and output: | |
205 | print(output, file=outfile) |
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210 | print(output, file=outfile) | |
206 |
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211 | |||
207 | if close_at_end: |
|
212 | if close_at_end: | |
208 | outfile.close() |
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213 | outfile.close() | |
209 |
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214 | |||
210 | @line_magic |
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215 | @line_magic | |
211 | def recall(self, arg): |
|
216 | def recall(self, arg): | |
212 | r"""Repeat a command, or get command to input line for editing. |
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217 | r"""Repeat a command, or get command to input line for editing. | |
213 |
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218 | |||
214 | %recall and %rep are equivalent. |
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219 | %recall and %rep are equivalent. | |
215 |
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220 | |||
216 | - %recall (no arguments): |
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221 | - %recall (no arguments): | |
217 |
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222 | |||
218 | Place a string version of last computation result (stored in the |
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223 | Place a string version of last computation result (stored in the | |
219 | special '_' variable) to the next input prompt. Allows you to create |
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224 | special '_' variable) to the next input prompt. Allows you to create | |
220 | elaborate command lines without using copy-paste:: |
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225 | elaborate command lines without using copy-paste:: | |
221 |
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226 | |||
222 | In[1]: l = ["hei", "vaan"] |
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227 | In[1]: l = ["hei", "vaan"] | |
223 | In[2]: "".join(l) |
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228 | In[2]: "".join(l) | |
224 | Out[2]: heivaan |
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229 | Out[2]: heivaan | |
225 | In[3]: %recall |
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230 | In[3]: %recall | |
226 | In[4]: heivaan_ <== cursor blinking |
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231 | In[4]: heivaan_ <== cursor blinking | |
227 |
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232 | |||
228 | %recall 45 |
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233 | %recall 45 | |
229 |
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234 | |||
230 | Place history line 45 on the next input prompt. Use %hist to find |
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235 | Place history line 45 on the next input prompt. Use %hist to find | |
231 | out the number. |
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236 | out the number. | |
232 |
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237 | |||
233 | %recall 1-4 |
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238 | %recall 1-4 | |
234 |
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239 | |||
235 | Combine the specified lines into one cell, and place it on the next |
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240 | Combine the specified lines into one cell, and place it on the next | |
236 | input prompt. See %history for the slice syntax. |
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241 | input prompt. See %history for the slice syntax. | |
237 |
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242 | |||
238 | %recall foo+bar |
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243 | %recall foo+bar | |
239 |
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244 | |||
240 | If foo+bar can be evaluated in the user namespace, the result is |
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245 | If foo+bar can be evaluated in the user namespace, the result is | |
241 | placed at the next input prompt. Otherwise, the history is searched |
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246 | placed at the next input prompt. Otherwise, the history is searched | |
242 | for lines which contain that substring, and the most recent one is |
|
247 | for lines which contain that substring, and the most recent one is | |
243 | placed at the next input prompt. |
|
248 | placed at the next input prompt. | |
244 | """ |
|
249 | """ | |
245 | if not arg: # Last output |
|
250 | if not arg: # Last output | |
246 | self.shell.set_next_input(str(self.shell.user_ns["_"])) |
|
251 | self.shell.set_next_input(str(self.shell.user_ns["_"])) | |
247 | return |
|
252 | return | |
248 | # Get history range |
|
253 | # Get history range | |
249 | histlines = self.shell.history_manager.get_range_by_str(arg) |
|
254 | histlines = self.shell.history_manager.get_range_by_str(arg) | |
250 | cmd = "\n".join(x[2] for x in histlines) |
|
255 | cmd = "\n".join(x[2] for x in histlines) | |
251 | if cmd: |
|
256 | if cmd: | |
252 | self.shell.set_next_input(cmd.rstrip()) |
|
257 | self.shell.set_next_input(cmd.rstrip()) | |
253 | return |
|
258 | return | |
254 |
|
259 | |||
255 | try: # Variable in user namespace |
|
260 | try: # Variable in user namespace | |
256 | cmd = str(eval(arg, self.shell.user_ns)) |
|
261 | cmd = str(eval(arg, self.shell.user_ns)) | |
257 | except Exception: # Search for term in history |
|
262 | except Exception: # Search for term in history | |
258 | histlines = self.shell.history_manager.search("*"+arg+"*") |
|
263 | histlines = self.shell.history_manager.search("*"+arg+"*") | |
259 | for h in reversed([x[2] for x in histlines]): |
|
264 | for h in reversed([x[2] for x in histlines]): | |
260 | if 'recall' in h or 'rep' in h: |
|
265 | if 'recall' in h or 'rep' in h: | |
261 | continue |
|
266 | continue | |
262 | self.shell.set_next_input(h.rstrip()) |
|
267 | self.shell.set_next_input(h.rstrip()) | |
263 | return |
|
268 | return | |
264 | else: |
|
269 | else: | |
265 | self.shell.set_next_input(cmd.rstrip()) |
|
270 | self.shell.set_next_input(cmd.rstrip()) | |
266 | print("Couldn't evaluate or find in history:", arg) |
|
271 | print("Couldn't evaluate or find in history:", arg) | |
267 |
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272 | |||
268 | @line_magic |
|
273 | @line_magic | |
269 | def rerun(self, parameter_s=''): |
|
274 | def rerun(self, parameter_s=''): | |
270 | """Re-run previous input |
|
275 | """Re-run previous input | |
271 |
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276 | |||
272 | By default, you can specify ranges of input history to be repeated |
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277 | By default, you can specify ranges of input history to be repeated | |
273 | (as with %history). With no arguments, it will repeat the last line. |
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278 | (as with %history). With no arguments, it will repeat the last line. | |
274 |
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279 | |||
275 | Options: |
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280 | Options: | |
276 |
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281 | |||
277 | -l <n> : Repeat the last n lines of input, not including the |
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282 | -l <n> : Repeat the last n lines of input, not including the | |
278 | current command. |
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283 | current command. | |
279 |
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284 | |||
280 | -g foo : Repeat the most recent line which contains foo |
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285 | -g foo : Repeat the most recent line which contains foo | |
281 | """ |
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286 | """ | |
282 | opts, args = self.parse_options(parameter_s, 'l:g:', mode='string') |
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287 | opts, args = self.parse_options(parameter_s, 'l:g:', mode='string') | |
283 | if "l" in opts: # Last n lines |
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288 | if "l" in opts: # Last n lines | |
284 | n = int(opts['l']) |
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289 | n = int(opts['l']) | |
285 | hist = self.shell.history_manager.get_tail(n) |
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290 | hist = self.shell.history_manager.get_tail(n) | |
286 | elif "g" in opts: # Search |
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291 | elif "g" in opts: # Search | |
287 | p = "*"+opts['g']+"*" |
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292 | p = "*"+opts['g']+"*" | |
288 | hist = list(self.shell.history_manager.search(p)) |
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293 | hist = list(self.shell.history_manager.search(p)) | |
289 | for l in reversed(hist): |
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294 | for l in reversed(hist): | |
290 | if "rerun" not in l[2]: |
|
295 | if "rerun" not in l[2]: | |
291 | hist = [l] # The last match which isn't a %rerun |
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296 | hist = [l] # The last match which isn't a %rerun | |
292 | break |
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297 | break | |
293 | else: |
|
298 | else: | |
294 | hist = [] # No matches except %rerun |
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299 | hist = [] # No matches except %rerun | |
295 | elif args: # Specify history ranges |
|
300 | elif args: # Specify history ranges | |
296 | hist = self.shell.history_manager.get_range_by_str(args) |
|
301 | hist = self.shell.history_manager.get_range_by_str(args) | |
297 | else: # Last line |
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302 | else: # Last line | |
298 | hist = self.shell.history_manager.get_tail(1) |
|
303 | hist = self.shell.history_manager.get_tail(1) | |
299 | hist = [x[2] for x in hist] |
|
304 | hist = [x[2] for x in hist] | |
300 | if not hist: |
|
305 | if not hist: | |
301 | print("No lines in history match specification") |
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306 | print("No lines in history match specification") | |
302 | return |
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307 | return | |
303 | histlines = "\n".join(hist) |
|
308 | histlines = "\n".join(hist) | |
304 | print("=== Executing: ===") |
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309 | print("=== Executing: ===") | |
305 | print(histlines) |
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310 | print(histlines) | |
306 | print("=== Output: ===") |
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311 | print("=== Output: ===") | |
307 | self.shell.run_cell("\n".join(hist), store_history=False) |
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312 | self.shell.run_cell("\n".join(hist), store_history=False) |
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