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# -*- coding: utf-8 -*-
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"""
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Class which mimics a module.
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Needed to allow pickle to correctly resolve namespaces during IPython
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sessions.
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$Id: FakeModule.py 1602 2006-08-11 09:19:33Z vivainio $"""
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#*****************************************************************************
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# Copyright (C) 2002-2004 Fernando Perez. <fperez@colorado.edu>
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#*****************************************************************************
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import types
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class FakeModule(types.ModuleType):
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"""Simple class with attribute access to fake a module.
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This is not meant to replace a module, but to allow inserting a fake
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module in sys.modules so that systems which rely on run-time module
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importing (like shelve and pickle) work correctly in interactive IPython
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sessions.
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Do NOT use this code for anything other than this IPython private hack."""
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def __init__(self,adict):
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types.ModuleType.__init__(self,adict['__name__'])
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# It seems pydoc (and perhaps others) needs any module instance to
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# implement a __nonzero__ method, so we add it if missing:
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if '__nonzero__' not in adict:
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def __nonzero__():
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return 1
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adict['__nonzero__'] = __nonzero__
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# modules should have a __file__ attribute
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adict['__file__'] = __file__
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self.__origdict = adict
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def __getattr__(self,key):
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try:
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return self.__origdict[key]
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except KeyError, e:
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raise AttributeError("FakeModule object has no attribute %s" % e)
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def __str__(self):
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return "<IPython.FakeModule instance>"
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def __repr__(self):
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return str(self)
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