Class definition within function

[Diez B. Roggisch]

Kay Schluehr wrote:

> 
> Tomi Lindberg wrote:
>> Hi,
>>
>> With the following function definition, is it possible to
>> create an instance of class C outside the function f (and if
>> it is, how)?
> 
> def f():
>     class C(object):
>         def __init__(self):
>             self.a = 'a'
>             f.C = C
>     return C()
> 
>>>> f.C
> <class '__main__.C'>

Not working, unless f has been called at least once. But what I didn't know
(and always wondered) if the classdefinition inside a function can use the
outer scope - and apparently, it can! Cool.


def f(baseclass):
    class C(baseclass):
        def __init__(self):
            self.a = 'a'
            f.C = C
        def foo(self):
            print baseclass
    return C()

c = f(object)
print f.C

c.foo()


Diez