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Date: Mon, 24 Sep 2012 17:08:45 -0700 (PDT)
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Subject: Re: which a is used?
From: alex23 <wuwe...@gmail.com>
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On Sep 25, 9:43=A0am, Jayden <jayden.s...@gmail.com> wrote:
> Dear All,
>
> I have a simple code as follows:
>
> # Begin
> a =3D 1
>
> def f():
> =A0 =A0 print a
>
> def g():
> =A0 =A0 a =3D 20
> =A0 =A0 f()
>
> g()
> #End
>
> I think the results should be 20, but it is 1. Would you please tell me w=
hy?

Because you don't declare 'a' in 'f', it looks for 'a' in the
surrounding scope _where it was defined_, not where it was called.
Because 'a' in the module scope is 1, you'll get 1.