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dynamic casting in python

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"Christian Reyes" <christian at rocketnetwork.com> wrote in messagenews:9bo76f$q82$1 at bob.news.rcn.net...> How do I do it?> Is it possible?def dynamic_cast(klass, object):  if isinstance(object, klass):    return object  # Returns 'None' if 'object' is not an instance of 'klass'class C: passclass A(C): passclass B(C): passdef create_C(name): # Factory function  if name == 'A': return A()  if name == 'B': return B()  raise ValueError, 'create_C argument must be "A" or "B"'spam = create_C('A')spam_as_A = dynamic_cast(A, spam) # Sets 'spam_as_A' to 'spam'.spam_as_B = dynamic_cast(B, spam) # Sets 'spam_as_B' to 'None'.--Rainer Deyke (root at rainerdeyke.com)Shareware computer games           -http://rainerdeyke.com"In ihren Reihen zu stehen heisst unter Feinden zu kaempfen" - Abigor

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