python nested classes with adjacent inheritence?

Question

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

results in

NameError: name 'A' is not defined

How do I inherit from B in C, if they are adjacent , both nested in A (inner classes)?

Martijn Pieters · Accepted Answer · 2013-07-30 14:09:43Z

4

You cannot use A until the class body has finished executing.

You can refer to 'local' names; the class body is executed as a function, and the local namespace of that function is used to supply the class attributes; within the class body, B is a local name:

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

edited Jul 30, 2013 at 14:09

answered Jul 30, 2013 at 14:02

Martijn Pieters

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