64 lines
2.5 KiB
Python
64 lines
2.5 KiB
Python
# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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import sys
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__exclude = ('__builtins__', '__file__', '__name__')
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def inject(module_name, new_globals, *additional_modules):
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## Put the specified modules in sys.modules for the duration of the import
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saved = {}
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for name, mod in additional_modules:
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saved[name] = sys.modules.get(name, None)
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sys.modules[name] = mod
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## Remove the old module from sys.modules and reimport it while the specified modules are in place
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old_module = sys.modules.pop(module_name, None)
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module = __import__(module_name, {}, {}, module_name.split('.')[:-1])
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if new_globals is not None:
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## Update the given globals dictionary with everything from this new module
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for name in dir(module):
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if name not in __exclude:
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new_globals[name] = getattr(module, name)
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## Keep a reference to the new module to prevent it from dying
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sys.modules['__patched_module_' + module_name] = module
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## Put the original module back
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if old_module is not None:
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sys.modules[module_name] = old_module
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else:
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del sys.modules[module_name]
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## Put all the saved modules back
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for name, mod in additional_modules:
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if saved[name] is not None:
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sys.modules[name] = saved[name]
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return module
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def import_patched(module_name, *additional_modules, **kw_additional_modules):
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return inject(
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module_name,
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None,
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*additional_modules + tuple(kw_additional_modules.items()))
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