[Python-Dev] Examples for PEP 572 (original) (raw)

David Mertz mertz at gnosis.cx
Wed Jul 4 12:31:11 EDT 2018

On Wed, Jul 4, 2018 at 12:13 PM Steven D'Aprano <steve at pearwood.info> wrote:

On Wed, Jul 04, 2018 at 10:20:35AM -0400, David Mertz wrote: > Hmmm... I admit I didn't expect quite this behavior. I'm don't actually > understand why it's doing what it does. > > >>> def myfun(): > ... print(globals().update({'foo', 43}), foo)

Try it with a dict {'foo': 43} instead of a set :-)

I think Chris meant to try it inside a function using locals() rather than globals.

Ah... you say "tomato" I say "raspberry"... set, dict...

Yeah, typo fixed, it makes more sense. Still, even a globals().update() expression is a binding operation. But it works perfectly fine with locals() also :-):

def myfun(): ... print(locals().update({'foo': 44}), locals().get('foo')) ... myfun() None 44

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