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1 | # encoding: utf-8 |
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1 | # encoding: utf-8 | |
2 | """ |
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2 | """ | |
3 | An embedded IPython shell. |
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3 | An embedded IPython shell. | |
4 | """ |
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4 | """ | |
5 | # Copyright (c) IPython Development Team. |
|
5 | # Copyright (c) IPython Development Team. | |
6 | # Distributed under the terms of the Modified BSD License. |
|
6 | # Distributed under the terms of the Modified BSD License. | |
7 |
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7 | |||
8 | from __future__ import with_statement |
|
8 | from __future__ import with_statement | |
9 | from __future__ import print_function |
|
9 | from __future__ import print_function | |
10 |
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10 | |||
11 | import sys |
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11 | import sys | |
12 | import warnings |
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12 | import warnings | |
13 |
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13 | |||
14 | from IPython.core import ultratb, compilerop |
|
14 | from IPython.core import ultratb, compilerop | |
15 | from IPython.core.magic import Magics, magics_class, line_magic |
|
15 | from IPython.core.magic import Magics, magics_class, line_magic | |
16 | from IPython.core.interactiveshell import DummyMod |
|
16 | from IPython.core.interactiveshell import DummyMod | |
17 | from IPython.core.interactiveshell import InteractiveShell |
|
17 | from IPython.core.interactiveshell import InteractiveShell | |
18 | from IPython.terminal.interactiveshell import TerminalInteractiveShell |
|
18 | from IPython.terminal.interactiveshell import TerminalInteractiveShell | |
19 | from IPython.terminal.ipapp import load_default_config |
|
19 | from IPython.terminal.ipapp import load_default_config | |
20 |
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20 | |||
21 | from traitlets import Bool, CBool, Unicode |
|
21 | from traitlets import Bool, CBool, Unicode | |
22 | from IPython.utils.io import ask_yes_no |
|
22 | from IPython.utils.io import ask_yes_no | |
23 |
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23 | |||
24 | class KillEmbeded(Exception):pass |
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24 | class KillEmbeded(Exception):pass | |
25 |
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25 | |||
26 | # This is an additional magic that is exposed in embedded shells. |
|
26 | # This is an additional magic that is exposed in embedded shells. | |
27 | @magics_class |
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27 | @magics_class | |
28 | class EmbeddedMagics(Magics): |
|
28 | class EmbeddedMagics(Magics): | |
29 |
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29 | |||
30 | @line_magic |
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30 | @line_magic | |
31 | def kill_embedded(self, parameter_s=''): |
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31 | def kill_embedded(self, parameter_s=''): | |
32 | """%kill_embedded : deactivate for good the current embedded IPython. |
|
32 | """%kill_embedded : deactivate for good the current embedded IPython. | |
33 |
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33 | |||
34 | This function (after asking for confirmation) sets an internal flag so |
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34 | This function (after asking for confirmation) sets an internal flag so | |
35 | that an embedded IPython will never activate again. This is useful to |
|
35 | that an embedded IPython will never activate again. This is useful to | |
36 | permanently disable a shell that is being called inside a loop: once |
|
36 | permanently disable a shell that is being called inside a loop: once | |
37 | you've figured out what you needed from it, you may then kill it and |
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37 | you've figured out what you needed from it, you may then kill it and | |
38 | the program will then continue to run without the interactive shell |
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38 | the program will then continue to run without the interactive shell | |
39 | interfering again. |
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39 | interfering again. | |
40 | """ |
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40 | """ | |
41 |
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41 | |||
42 | kill = ask_yes_no("Are you sure you want to kill this embedded instance " |
|
42 | kill = ask_yes_no("Are you sure you want to kill this embedded instance " | |
43 | "(y/n)? [y/N] ",'n') |
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43 | "(y/n)? [y/N] ",'n') | |
44 | if kill: |
|
44 | if kill: | |
45 | self.shell.embedded_active = False |
|
45 | self.shell.embedded_active = False | |
46 | print ("This embedded IPython will not reactivate anymore " |
|
46 | print ("This embedded IPython will not reactivate anymore " | |
47 | "once you exit.") |
|
47 | "once you exit.") | |
48 |
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48 | |||
49 | if sys.version_info > (3,): |
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50 |
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49 | |||
51 |
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50 | @line_magic | |
52 |
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51 | def exit_raise(self, parameter_s=''): | |
53 |
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52 | """%exit_raise Make the current embedded kernel exit and raise and exception. | |
54 |
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55 | You can change that again during current session by calling `%raise_on_exit` with `True`/`False` as parameter |
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56 |
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53 | |||
57 |
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54 | This function (after asking for confirmation) sets an internal flag so | |
58 |
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55 | that an embedded IPython will raise a `KillEmbeded` Exception on exit. | |
59 |
permanently exit a loop that create IPython embed |
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56 | This is useful to permanently exit a loop that create IPython embed | |
60 |
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57 | instance. | ||
61 | Available only for Python 3. |
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62 |
|
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58 | """ | |
63 | parameter_s = parameter_s.strip().lower() |
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64 |
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65 | should_raise = None |
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66 | if parameter_s in {'yes', 'raise', 'true', '1'}: |
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67 | should_raise = True |
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68 | elif parameter_s in {'no', 'false', '0', 'None'}: |
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69 | should_raise = False |
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70 | else: |
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71 | if self.shell.should_raise : |
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72 | print("The current embed instance will raise on exit, use `%raise_on_exit False` to disable") |
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73 | return |
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74 | else: |
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75 | print("The current embed instance will not raise on exit, use `%raise_on_exit True` to enable") |
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76 | return |
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77 |
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59 | |||
78 | if should_raise: |
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79 |
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60 | self.shell.should_raise = True | |
80 | print ("This embedded IPython will raise while exiting.") |
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61 | self.shell.ask_exit() | |
81 | else : |
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82 | self.shell.should_raise = False |
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83 | print ("This embedded IPython will not raise while exiting.") |
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84 |
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62 | |||
85 |
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63 | |||
86 |
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64 | |||
87 | class InteractiveShellEmbed(TerminalInteractiveShell): |
|
65 | class InteractiveShellEmbed(TerminalInteractiveShell): | |
88 |
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66 | |||
89 | dummy_mode = Bool(False) |
|
67 | dummy_mode = Bool(False) | |
90 | exit_msg = Unicode('') |
|
68 | exit_msg = Unicode('') | |
91 | embedded = CBool(True) |
|
69 | embedded = CBool(True) | |
92 | embedded_active = CBool(True) |
|
70 | embedded_active = CBool(True) | |
93 | should_raise = CBool(False) |
|
71 | should_raise = CBool(False) | |
94 | # Like the base class display_banner is not configurable, but here it |
|
72 | # Like the base class display_banner is not configurable, but here it | |
95 | # is True by default. |
|
73 | # is True by default. | |
96 | display_banner = CBool(True) |
|
74 | display_banner = CBool(True) | |
97 | exit_msg = Unicode() |
|
75 | exit_msg = Unicode() | |
98 |
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76 | |||
99 |
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77 | |||
100 | def __init__(self, **kw): |
|
78 | def __init__(self, **kw): | |
101 |
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79 | |||
102 |
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80 | |||
103 | if kw.get('user_global_ns', None) is not None: |
|
81 | if kw.get('user_global_ns', None) is not None: | |
104 | warnings.warn("user_global_ns has been replaced by user_module. The\ |
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82 | warnings.warn("user_global_ns has been replaced by user_module. The\ | |
105 | parameter will be ignored, and removed in IPython 5.0", DeprecationWarning) |
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83 | parameter will be ignored, and removed in IPython 5.0", DeprecationWarning) | |
106 |
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84 | |||
107 | super(InteractiveShellEmbed,self).__init__(**kw) |
|
85 | super(InteractiveShellEmbed,self).__init__(**kw) | |
108 |
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86 | |||
109 | # don't use the ipython crash handler so that user exceptions aren't |
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87 | # don't use the ipython crash handler so that user exceptions aren't | |
110 | # trapped |
|
88 | # trapped | |
111 | sys.excepthook = ultratb.FormattedTB(color_scheme=self.colors, |
|
89 | sys.excepthook = ultratb.FormattedTB(color_scheme=self.colors, | |
112 | mode=self.xmode, |
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90 | mode=self.xmode, | |
113 | call_pdb=self.pdb) |
|
91 | call_pdb=self.pdb) | |
114 |
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92 | |||
115 | def init_sys_modules(self): |
|
93 | def init_sys_modules(self): | |
116 | pass |
|
94 | pass | |
117 |
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95 | |||
118 | def init_magics(self): |
|
96 | def init_magics(self): | |
119 | super(InteractiveShellEmbed, self).init_magics() |
|
97 | super(InteractiveShellEmbed, self).init_magics() | |
120 | self.register_magics(EmbeddedMagics) |
|
98 | self.register_magics(EmbeddedMagics) | |
121 |
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99 | |||
122 | def __call__(self, header='', local_ns=None, module=None, dummy=None, |
|
100 | def __call__(self, header='', local_ns=None, module=None, dummy=None, | |
123 | stack_depth=1, global_ns=None, compile_flags=None): |
|
101 | stack_depth=1, global_ns=None, compile_flags=None): | |
124 | """Activate the interactive interpreter. |
|
102 | """Activate the interactive interpreter. | |
125 |
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103 | |||
126 | __call__(self,header='',local_ns=None,module=None,dummy=None) -> Start |
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104 | __call__(self,header='',local_ns=None,module=None,dummy=None) -> Start | |
127 | the interpreter shell with the given local and global namespaces, and |
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105 | the interpreter shell with the given local and global namespaces, and | |
128 | optionally print a header string at startup. |
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106 | optionally print a header string at startup. | |
129 |
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107 | |||
130 | The shell can be globally activated/deactivated using the |
|
108 | The shell can be globally activated/deactivated using the | |
131 | dummy_mode attribute. This allows you to turn off a shell used |
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109 | dummy_mode attribute. This allows you to turn off a shell used | |
132 | for debugging globally. |
|
110 | for debugging globally. | |
133 |
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111 | |||
134 | However, *each* time you call the shell you can override the current |
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112 | However, *each* time you call the shell you can override the current | |
135 | state of dummy_mode with the optional keyword parameter 'dummy'. For |
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113 | state of dummy_mode with the optional keyword parameter 'dummy'. For | |
136 | example, if you set dummy mode on with IPShell.dummy_mode = True, you |
|
114 | example, if you set dummy mode on with IPShell.dummy_mode = True, you | |
137 | can still have a specific call work by making it as IPShell(dummy=False). |
|
115 | can still have a specific call work by making it as IPShell(dummy=False). | |
138 | """ |
|
116 | """ | |
139 |
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117 | |||
140 | # If the user has turned it off, go away |
|
118 | # If the user has turned it off, go away | |
141 | if not self.embedded_active: |
|
119 | if not self.embedded_active: | |
142 | return |
|
120 | return | |
143 |
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121 | |||
144 | # Normal exits from interactive mode set this flag, so the shell can't |
|
122 | # Normal exits from interactive mode set this flag, so the shell can't | |
145 | # re-enter (it checks this variable at the start of interactive mode). |
|
123 | # re-enter (it checks this variable at the start of interactive mode). | |
146 | self.exit_now = False |
|
124 | self.exit_now = False | |
147 |
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125 | |||
148 | # Allow the dummy parameter to override the global __dummy_mode |
|
126 | # Allow the dummy parameter to override the global __dummy_mode | |
149 | if dummy or (dummy != 0 and self.dummy_mode): |
|
127 | if dummy or (dummy != 0 and self.dummy_mode): | |
150 | return |
|
128 | return | |
151 |
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129 | |||
152 | if self.has_readline: |
|
130 | if self.has_readline: | |
153 | self.set_readline_completer() |
|
131 | self.set_readline_completer() | |
154 |
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132 | |||
155 | # self.banner is auto computed |
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133 | # self.banner is auto computed | |
156 | if header: |
|
134 | if header: | |
157 | self.old_banner2 = self.banner2 |
|
135 | self.old_banner2 = self.banner2 | |
158 | self.banner2 = self.banner2 + '\n' + header + '\n' |
|
136 | self.banner2 = self.banner2 + '\n' + header + '\n' | |
159 | else: |
|
137 | else: | |
160 | self.old_banner2 = '' |
|
138 | self.old_banner2 = '' | |
161 |
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139 | |||
162 | # Call the embedding code with a stack depth of 1 so it can skip over |
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140 | # Call the embedding code with a stack depth of 1 so it can skip over | |
163 | # our call and get the original caller's namespaces. |
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141 | # our call and get the original caller's namespaces. | |
164 | self.mainloop(local_ns, module, stack_depth=stack_depth, |
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142 | self.mainloop(local_ns, module, stack_depth=stack_depth, | |
165 | global_ns=global_ns, compile_flags=compile_flags) |
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143 | global_ns=global_ns, compile_flags=compile_flags) | |
166 |
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144 | |||
167 | self.banner2 = self.old_banner2 |
|
145 | self.banner2 = self.old_banner2 | |
168 |
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146 | |||
169 | if self.exit_msg is not None: |
|
147 | if self.exit_msg is not None: | |
170 | print(self.exit_msg) |
|
148 | print(self.exit_msg) | |
171 |
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149 | |||
172 | if self.should_raise: |
|
150 | if self.should_raise: | |
173 | raise KillEmbeded('This instance has been marked as must raise on exit.') |
|
151 | raise KillEmbeded('This instance has been marked as must raise on exit.') | |
174 |
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152 | |||
175 |
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153 | |||
176 | def mainloop(self, local_ns=None, module=None, stack_depth=0, |
|
154 | def mainloop(self, local_ns=None, module=None, stack_depth=0, | |
177 | display_banner=None, global_ns=None, compile_flags=None): |
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155 | display_banner=None, global_ns=None, compile_flags=None): | |
178 | """Embeds IPython into a running python program. |
|
156 | """Embeds IPython into a running python program. | |
179 |
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157 | |||
180 | Parameters |
|
158 | Parameters | |
181 | ---------- |
|
159 | ---------- | |
182 |
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160 | |||
183 | local_ns, module |
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161 | local_ns, module | |
184 | Working local namespace (a dict) and module (a module or similar |
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162 | Working local namespace (a dict) and module (a module or similar | |
185 | object). If given as None, they are automatically taken from the scope |
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163 | object). If given as None, they are automatically taken from the scope | |
186 | where the shell was called, so that program variables become visible. |
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164 | where the shell was called, so that program variables become visible. | |
187 |
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165 | |||
188 | stack_depth : int |
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166 | stack_depth : int | |
189 | How many levels in the stack to go to looking for namespaces (when |
|
167 | How many levels in the stack to go to looking for namespaces (when | |
190 | local_ns or module is None). This allows an intermediate caller to |
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168 | local_ns or module is None). This allows an intermediate caller to | |
191 | make sure that this function gets the namespace from the intended |
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169 | make sure that this function gets the namespace from the intended | |
192 | level in the stack. By default (0) it will get its locals and globals |
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170 | level in the stack. By default (0) it will get its locals and globals | |
193 | from the immediate caller. |
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171 | from the immediate caller. | |
194 |
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172 | |||
195 | compile_flags |
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173 | compile_flags | |
196 | A bit field identifying the __future__ features |
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174 | A bit field identifying the __future__ features | |
197 | that are enabled, as passed to the builtin :func:`compile` function. |
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175 | that are enabled, as passed to the builtin :func:`compile` function. | |
198 | If given as None, they are automatically taken from the scope where |
|
176 | If given as None, they are automatically taken from the scope where | |
199 | the shell was called. |
|
177 | the shell was called. | |
200 |
|
178 | |||
201 | """ |
|
179 | """ | |
202 |
|
180 | |||
203 | if (global_ns is not None) and (module is None): |
|
181 | if (global_ns is not None) and (module is None): | |
204 | warnings.warn("global_ns is deprecated, and will be removed in IPython 5.0 use module instead.", DeprecationWarning) |
|
182 | warnings.warn("global_ns is deprecated, and will be removed in IPython 5.0 use module instead.", DeprecationWarning) | |
205 | module = DummyMod() |
|
183 | module = DummyMod() | |
206 | module.__dict__ = global_ns |
|
184 | module.__dict__ = global_ns | |
207 |
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185 | |||
208 | # Get locals and globals from caller |
|
186 | # Get locals and globals from caller | |
209 | if ((local_ns is None or module is None or compile_flags is None) |
|
187 | if ((local_ns is None or module is None or compile_flags is None) | |
210 | and self.default_user_namespaces): |
|
188 | and self.default_user_namespaces): | |
211 | call_frame = sys._getframe(stack_depth).f_back |
|
189 | call_frame = sys._getframe(stack_depth).f_back | |
212 |
|
190 | |||
213 | if local_ns is None: |
|
191 | if local_ns is None: | |
214 | local_ns = call_frame.f_locals |
|
192 | local_ns = call_frame.f_locals | |
215 | if module is None: |
|
193 | if module is None: | |
216 | global_ns = call_frame.f_globals |
|
194 | global_ns = call_frame.f_globals | |
217 | module = sys.modules[global_ns['__name__']] |
|
195 | module = sys.modules[global_ns['__name__']] | |
218 | if compile_flags is None: |
|
196 | if compile_flags is None: | |
219 | compile_flags = (call_frame.f_code.co_flags & |
|
197 | compile_flags = (call_frame.f_code.co_flags & | |
220 | compilerop.PyCF_MASK) |
|
198 | compilerop.PyCF_MASK) | |
221 |
|
199 | |||
222 | # Save original namespace and module so we can restore them after |
|
200 | # Save original namespace and module so we can restore them after | |
223 | # embedding; otherwise the shell doesn't shut down correctly. |
|
201 | # embedding; otherwise the shell doesn't shut down correctly. | |
224 | orig_user_module = self.user_module |
|
202 | orig_user_module = self.user_module | |
225 | orig_user_ns = self.user_ns |
|
203 | orig_user_ns = self.user_ns | |
226 | orig_compile_flags = self.compile.flags |
|
204 | orig_compile_flags = self.compile.flags | |
227 |
|
205 | |||
228 | # Update namespaces and fire up interpreter |
|
206 | # Update namespaces and fire up interpreter | |
229 |
|
207 | |||
230 | # The global one is easy, we can just throw it in |
|
208 | # The global one is easy, we can just throw it in | |
231 | if module is not None: |
|
209 | if module is not None: | |
232 | self.user_module = module |
|
210 | self.user_module = module | |
233 |
|
211 | |||
234 | # But the user/local one is tricky: ipython needs it to store internal |
|
212 | # But the user/local one is tricky: ipython needs it to store internal | |
235 | # data, but we also need the locals. We'll throw our hidden variables |
|
213 | # data, but we also need the locals. We'll throw our hidden variables | |
236 | # like _ih and get_ipython() into the local namespace, but delete them |
|
214 | # like _ih and get_ipython() into the local namespace, but delete them | |
237 | # later. |
|
215 | # later. | |
238 | if local_ns is not None: |
|
216 | if local_ns is not None: | |
239 | reentrant_local_ns = {k: v for (k, v) in local_ns.items() if k not in self.user_ns_hidden.keys()} |
|
217 | reentrant_local_ns = {k: v for (k, v) in local_ns.items() if k not in self.user_ns_hidden.keys()} | |
240 | self.user_ns = reentrant_local_ns |
|
218 | self.user_ns = reentrant_local_ns | |
241 | self.init_user_ns() |
|
219 | self.init_user_ns() | |
242 |
|
220 | |||
243 | # Compiler flags |
|
221 | # Compiler flags | |
244 | if compile_flags is not None: |
|
222 | if compile_flags is not None: | |
245 | self.compile.flags = compile_flags |
|
223 | self.compile.flags = compile_flags | |
246 |
|
224 | |||
247 | # make sure the tab-completer has the correct frame information, so it |
|
225 | # make sure the tab-completer has the correct frame information, so it | |
248 | # actually completes using the frame's locals/globals |
|
226 | # actually completes using the frame's locals/globals | |
249 | self.set_completer_frame() |
|
227 | self.set_completer_frame() | |
250 |
|
228 | |||
251 | with self.builtin_trap, self.display_trap: |
|
229 | with self.builtin_trap, self.display_trap: | |
252 | self.interact(display_banner=display_banner) |
|
230 | self.interact(display_banner=display_banner) | |
253 |
|
231 | |||
254 | # now, purge out the local namespace of IPython's hidden variables. |
|
232 | # now, purge out the local namespace of IPython's hidden variables. | |
255 | if local_ns is not None: |
|
233 | if local_ns is not None: | |
256 | local_ns.update({k: v for (k, v) in self.user_ns.items() if k not in self.user_ns_hidden.keys()}) |
|
234 | local_ns.update({k: v for (k, v) in self.user_ns.items() if k not in self.user_ns_hidden.keys()}) | |
257 |
|
235 | |||
258 |
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236 | |||
259 | # Restore original namespace so shell can shut down when we exit. |
|
237 | # Restore original namespace so shell can shut down when we exit. | |
260 | self.user_module = orig_user_module |
|
238 | self.user_module = orig_user_module | |
261 | self.user_ns = orig_user_ns |
|
239 | self.user_ns = orig_user_ns | |
262 | self.compile.flags = orig_compile_flags |
|
240 | self.compile.flags = orig_compile_flags | |
263 |
|
241 | |||
264 |
|
242 | |||
265 | def embed(**kwargs): |
|
243 | def embed(**kwargs): | |
266 | """Call this to embed IPython at the current point in your program. |
|
244 | """Call this to embed IPython at the current point in your program. | |
267 |
|
245 | |||
268 | The first invocation of this will create an :class:`InteractiveShellEmbed` |
|
246 | The first invocation of this will create an :class:`InteractiveShellEmbed` | |
269 | instance and then call it. Consecutive calls just call the already |
|
247 | instance and then call it. Consecutive calls just call the already | |
270 | created instance. |
|
248 | created instance. | |
271 |
|
249 | |||
272 | If you don't want the kernel to initialize the namespace |
|
250 | If you don't want the kernel to initialize the namespace | |
273 | from the scope of the surrounding function, |
|
251 | from the scope of the surrounding function, | |
274 | and/or you want to load full IPython configuration, |
|
252 | and/or you want to load full IPython configuration, | |
275 | you probably want `IPython.start_ipython()` instead. |
|
253 | you probably want `IPython.start_ipython()` instead. | |
276 |
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254 | |||
277 | Here is a simple example:: |
|
255 | Here is a simple example:: | |
278 |
|
256 | |||
279 | from IPython import embed |
|
257 | from IPython import embed | |
280 | a = 10 |
|
258 | a = 10 | |
281 | b = 20 |
|
259 | b = 20 | |
282 | embed(header='First time') |
|
260 | embed(header='First time') | |
283 | c = 30 |
|
261 | c = 30 | |
284 | d = 40 |
|
262 | d = 40 | |
285 | embed() |
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263 | embed() | |
286 |
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264 | |||
287 | Full customization can be done by passing a :class:`Config` in as the |
|
265 | Full customization can be done by passing a :class:`Config` in as the | |
288 | config argument. |
|
266 | config argument. | |
289 | """ |
|
267 | """ | |
290 | config = kwargs.get('config') |
|
268 | config = kwargs.get('config') | |
291 | header = kwargs.pop('header', u'') |
|
269 | header = kwargs.pop('header', u'') | |
292 | compile_flags = kwargs.pop('compile_flags', None) |
|
270 | compile_flags = kwargs.pop('compile_flags', None) | |
293 | if config is None: |
|
271 | if config is None: | |
294 | config = load_default_config() |
|
272 | config = load_default_config() | |
295 | config.InteractiveShellEmbed = config.TerminalInteractiveShell |
|
273 | config.InteractiveShellEmbed = config.TerminalInteractiveShell | |
296 | kwargs['config'] = config |
|
274 | kwargs['config'] = config | |
297 | #save ps1/ps2 if defined |
|
275 | #save ps1/ps2 if defined | |
298 | ps1 = None |
|
276 | ps1 = None | |
299 | ps2 = None |
|
277 | ps2 = None | |
300 | try: |
|
278 | try: | |
301 | ps1 = sys.ps1 |
|
279 | ps1 = sys.ps1 | |
302 | ps2 = sys.ps2 |
|
280 | ps2 = sys.ps2 | |
303 | except AttributeError: |
|
281 | except AttributeError: | |
304 | pass |
|
282 | pass | |
305 | #save previous instance |
|
283 | #save previous instance | |
306 | saved_shell_instance = InteractiveShell._instance |
|
284 | saved_shell_instance = InteractiveShell._instance | |
307 | if saved_shell_instance is not None: |
|
285 | if saved_shell_instance is not None: | |
308 | cls = type(saved_shell_instance) |
|
286 | cls = type(saved_shell_instance) | |
309 | cls.clear_instance() |
|
287 | cls.clear_instance() | |
310 | shell = InteractiveShellEmbed.instance(**kwargs) |
|
288 | shell = InteractiveShellEmbed.instance(**kwargs) | |
311 | shell(header=header, stack_depth=2, compile_flags=compile_flags) |
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289 | shell(header=header, stack_depth=2, compile_flags=compile_flags) | |
312 | InteractiveShellEmbed.clear_instance() |
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290 | InteractiveShellEmbed.clear_instance() | |
313 | #restore previous instance |
|
291 | #restore previous instance | |
314 | if saved_shell_instance is not None: |
|
292 | if saved_shell_instance is not None: | |
315 | cls = type(saved_shell_instance) |
|
293 | cls = type(saved_shell_instance) | |
316 | cls.clear_instance() |
|
294 | cls.clear_instance() | |
317 | for subclass in cls._walk_mro(): |
|
295 | for subclass in cls._walk_mro(): | |
318 | subclass._instance = saved_shell_instance |
|
296 | subclass._instance = saved_shell_instance | |
319 | if ps1 is not None: |
|
297 | if ps1 is not None: | |
320 | sys.ps1 = ps1 |
|
298 | sys.ps1 = ps1 | |
321 | sys.ps2 = ps2 |
|
299 | sys.ps2 = ps2 |
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