[Python-ideas] Return for assignment blocks

[Calvin Spealman]

I'd like to suggest what I think would be a simple addition to `def` and
`class` blocks. I don't know if calling those "Assignment Blocks" is
accurate, but I just mean to refer to block syntaxes that assign to a name.
Anyway, I propose a combined return-def structure, and optionally also
allowing a return-class version. Omitting the name would be allowable, as
well.

This would only apply to a `def` or `class` statement made as the last part
of the function body, of course.

def ignore_exc(exc_type):
    return def (func):
        @wraps(func)
        return def (*args, **kwargs):
            try:
                return func(*args, **kwargs)
            except exc_type:
                pass

Thanks for considering and for any comments, thoughts, or feedback on the
idea!
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