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[top] / python / PyMOTW / copy / copy_hooks.py

     #!/usr/bin/env python
     #
     # Copyright 2007 Doug Hellmann.
     #
     #
     #                         All Rights Reserved
     #
     # Permission to use, copy, modify, and distribute this software and
     # its documentation for any purpose and without fee is hereby
     # granted, provided that the above copyright notice appear in all
     # copies and that both that copyright notice and this permission
     # notice appear in supporting documentation, and that the name of Doug
     # Hellmann not be used in advertising or publicity pertaining to
     # distribution of the software without specific, written prior
     # permission.
     #
     # DOUG HELLMANN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
     # INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
     # NO EVENT SHALL DOUG HELLMANN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
     # CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
     # OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
     # NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
     # CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     #
     
     """Shallow copy example
     
     """
     
     __version__ = "$Id$"
     #end_pymotw_header
     
     import copy
     
     class MyClass:
         def __init__(self, name):
             self.name = name
         def __cmp__(self, other):
             return cmp(self.name, other.name)
         def __copy__(self):
             print '__copy__()'
             return MyClass(self.name)
         def __deepcopy__(self, memo):
             print '__deepcopy__(%s)' % str(memo)
             return MyClass(copy.deepcopy(self.name, memo))
     
     a = MyClass('a')
     
     sc = copy.copy(a)
     dc = copy.deepcopy(a)
     

[top] / python / PyMOTW / copy / copy_hooks.py

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