[Python-ideas] Statement local functions and classes (aka PEP 3150 is dead, say 'Hi!' to PEP 403)

[Nick Coghlan]

On Mon, Oct 17, 2011 at 11:00 PM, Paul Moore <p.f.moore at gmail.com> wrote:
> I'd expect the given suite to only contain name-definition statements
> (assignments, function and class definitions). Anything else should be
> at least bad practice, if not out and out illegal...

It would be perfectly legal, just inadvisable most of the time (as the
suggested PEP 8 addition says, if your given clause gets unwieldy,
it's probably a bad idea). However, those expansions are almost
exactly what 3.x comprehensions look like from the interpreter's point
of view.

And the assignment between the given statement and the colon wasn't a
typo - that was the explicit early binding of an expression evaluated
in the outer scope. It's the way comprehensions behave, and I suspect
it may be a good compromise for given statements as well (to make
their scoping rules more consistent with the rest of the language,
while still having them be vaguely usable at class scope)

Cheers,
Nick.

-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia