[Python-Dev] Explicit Lexical Scoping (pre-PEP?) (original) (raw)

Andrew Koenig ark at acm.org
Sun Jul 9 17:07:56 CEST 2006

So, if I understand correctly, in the presence of a global statement search just goes up the lexical chain looking for the first occurrence of the variable to modify?

x = 0 def f(): x = 1 def g(): global x x = 2 print x g() print x f() print x Today it prints 2 1 2 You're suggesting it will print 2 2 0 ?

Sounds right to me.

Sounds reasonable to me. If we're talking py3k I'd chuck "global" as a keyword though and replace it with something like "outer".

I must say that I don't like "outer" any more than I like "global." The problem is that in both cases we are selecting the innermost definition that isn't in the current scope.

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