[Python-3000] Lexical variables at last!

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    Rocco> However, I've also tried this:

    Rocco> def accumulator(n):
    Rocco>     return lambda x: nonlocal n = n + x

    Rocco> and unfortunately it gave me a syntax error. I don't see any
    Rocco> reason why this kind of code should not be possible.

    Rocco> What do you all think?

Lambdas only support a single expression, not statements and that's not
going to change in 3.0.

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