[Python-Dev] Explicit Lexical Scoping (pre-PEP?) (original) (raw)
Just van Rossum just at letterror.com
Wed Jul 5 12:54:07 CEST 2006
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Guido van Rossum wrote:
Hallo broer! :-)
Yo :)
I wonder what this should mean then:
def outer(): def inner(): x := 1 What is x's scope?
UnboundVariableError: variable 'x' referenced before assignment
Or a SyntaxError if the compiler can detect it.
Also, a := operator allows all sorts of left-hand sides that don't necessarily make sense, e.g.
x.foo := 1 x[0] := 1
True, although maybe they could be made to make sense by defining special methods:
__rebindattr__
__rebinditem__<0.5 wink>
Just
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