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How do you clone a class in Python?

I have class A and I want class B with exactly the same capabilities. I cannot or do not want to inherit from B, for example, by executing class B (A): pass However, I want B to be identical to A, but have a different i: id (A)! = Id (B) Beware I'm not talking about examples, but classes that need to be cloned.

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5 answers

I am sure that everything you are trying to do can be solved better, but here is something that gives you a clone of the class with a new id:

def c(): class Clone(object): pass return Clone c1 = c() c2 = c() print id(c1) print id(c2)

gives:

 4303713312 4303831072
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I think this is not what you wanted, but what seems to be asking a question ...

 class Foo(object): def bar(self): return "BAR!" cls = type("Bar", (object,), dict(Foo.__dict__)) print cls x = cls() print x.bar()
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I may have misunderstood you, but what about packing A to B?

 class A: def foo(self): print "A.foo" class B: def __init__(self): self._i = A() def __getattr__(self, n): return getattr(self._i, n)
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You can clone a class through inheritance. Otherwise, you simply pass the reference to the class itself (and not the reference to the class instance). Why do you want to duplicate a class? Obviously why you want to create multiple instances of the class, but I cannot understand why you need a duplicate class. Alternatively, you can simply copy and paste with the new class name ...

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 class C(object): pass class A(C): pass class B(C): pass
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