[Python-Dev] PEP for Better Control of Nested Lexical Scopes
ianb at colorstudy.com
Tue Feb 21 22:13:22 CET 2006
Mark Russell wrote:
> On 21 Feb 2006, at 19:25, Jeremy Hylton wrote:
>>If I recall the discussion correctly, Guido said he was open to a
>>version of nested scopes that allowed rebinding.
> PEP 227 mentions using := as a rebinding operator, but rejects the
> idea as it would encourage the use of closures. But to me it seems
> more elegant than some special keyword, especially is it could also
> replace the "global" keyword. It doesn't handle things like "x += y"
> but I think you could deal with that by just writing "x := x + y".
By rebinding operator, does that mean it is actually an operator? I.e.:
# Required assignment to declare?:
chunk = None
while chunk := f.read(1000):
Ian Bicking / ianb at colorstudy.com / http://blog.ianbicking.org
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