39 lines
1.3 KiB
Python
39 lines
1.3 KiB
Python
# (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org)
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# Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
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class classinstancemethod(object):
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"""
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Acts like a class method when called from a class, like an
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instance method when called by an instance. The method should
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take two arguments, 'self' and 'cls'; one of these will be None
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depending on how the method was called.
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"""
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def __init__(self, func):
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self.func = func
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self.__doc__ = func.__doc__
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def __get__(self, obj, type=None):
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return _methodwrapper(self.func, obj=obj, type=type)
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class _methodwrapper(object):
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def __init__(self, func, obj, type):
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self.func = func
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self.obj = obj
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self.type = type
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def __call__(self, *args, **kw):
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assert 'self' not in kw and 'cls' not in kw, (
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"You cannot use 'self' or 'cls' arguments to a "
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"classinstancemethod")
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return self.func(*((self.obj, self.type) + args), **kw)
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def __repr__(self):
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if self.obj is None:
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return ('<bound class method %s.%s>'
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% (self.type.__name__, self.func.func_name))
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else:
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return ('<bound method %s.%s of %r>'
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% (self.type.__name__, self.func.func_name, self.obj))
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