This was exactly what I was thinking of when I said
> This is unavoidable in a for loop without breaking existing code, but I think
> could (and
should?) be changed in a list comprehension
Unfortunately, I was wrong in the last half of this statement.
> since the comprehension control variable
lives in an inner scope
The inner scope can still be closed over via a lambda, such as in the
following. I think that makes changing the semantics of either a breaking
change.
>>> funcs = [lambda: i for i in range(2)]
>>> [f() for f in funcs()]
[1, 1] # often not intended, but demonstrates the last-value-assigned
semantics
Eric
_______________________________________________
Python-ideas mailing list -- python-ideas@python.org
To unsubscribe send an email to python-ideas-le...@python.org
https://mail.python.org/mailman3/lists/python-ideas.python.org/
Message archived at
https://mail.python.org/archives/list/python-ideas@python.org/message/KPDOSMOB4YB5KUIM6WCCMGQIYGY3PGGO/
Code of Conduct: http://python.org/psf/codeofconduct/
