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Mon Apr 24 19:16:00 CEST 2006 · https://mail.python.org/pipermail/python-dev/2006-April/064274.html

    Michael> I've hit on what looks like a fundamental ambiguity in the
    Michael> Python grammar which is difficult to get round with PLY; and
    Michael> I'm wondering *why* the grammar is defined in this way.

Michael,

You refer to the ref manual documentation:

    Michael> List displays (list comprehensions) are defined as (from
    Michael> http://docs.python.org/ref/lists.html )

Note that the BNF there is mostly designed for human consumption.  Have you
verified that the ambiguity is also present in the Grammar file?

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[Python-Dev] Python Grammar Ambiguity