On 2006-10-09 15:47:09 +0200, Jim Jewett wrote:
> Because it is ambiguous. The print indicates that you want (read)
> access to an existing variable, but the assignment indicates that you
> want (write) access to that variable. Did you mean
>
> x = 0
> def f():
> global x # modify the existing variable
> print x
> x = 3
> or
> x = 0
> def f():
> x = x # shadow the existing variable
> print x
> x = 3
I would expect the latter.
However, why global?
What's the use case for having global variables in the first place?
If I want to alter a variable that is not in the current scope, I use a
class:
class Foo:
x = 0
def f(self):
self.x = 3
According to Google codesearch, it is hardly used in the Python library:
http://tinyurl.com/lkhlg
Is global evil?
Just asking.
regards,
Gerrit.
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