[Python-Dev] PEP 572: Assignment Expressions

[Robert Smallshire]

If you restrict the idea to 'if' and 'while', Why not render this using the
existing 'as' form for binding names, already used with 'except' and 'with':

    while learner.get(static_hint) as points:
        learner.feed(f(points))

The equivalent for 'if' helps with the regex matching case:

    if re.match(r"...") as m:
        print(m.group(1))

I considered proposing these two forms in a PEP a few years ago, but never
got around to it. To my eye, they fit syntactically into the language
as-is, without introducing new symbols, operators or keywords, are
consistent with existing usage, and address two relatively common causes of
displeasing Python code.

Robert
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