[Cython] Class scope lookup order

[Vitja Makarov]

2011/8/15 Vitja Makarov <vitja.makarov at gmail.com>:
> When creating python-class dict it seems that CPython first looks at
> dict then at globals:
>
> A = 1
> class X:
>    A = A
>
> def y():
>    A = 3
>    class Y:
>        A = A
>    return Y
> Y = y()
>
> print(X.A, Y.A)
>
> Will print: 1, 1
> And not: 1, 3
>
> I didn't find documentation for this but if I'm correct that should be
> easy to fix issue in Cython.
>
> Now for this code cython reports compile-time error: local variable
> referenced before assignment
>
>

One more interesting example:

A = 1
def foo(a):
    A = a
    class X:
        a = A
        A = A
    class Y:
        a = A
    return X, Y
X, Y = foo(666)
print X.a, X.A, Y.a

-- 
vitja.