On Wed, 13 May 2020 19:27:57 -0700 Ethan Furman <et...@stoneleaf.us> wrote: > On 05/13/2020 06:04 AM, Antoine Pitrou wrote: > > On Tue, 12 May 2020 11:36:38 -0700 > > Ethan Furman wrote: > >> > >> Also, if a flag is used, won't that slow down every call to zip even when > >> the flag is False? > > > > Why would it? Is that based on a rational analysis of how argument > > parsing works? > > Not the call itself, but the running of zip. Absent some clever programming > it seems to me that there are two choices if we have a flag: > > - have two independent branches (basically `zip` and a `zip_strict` functions > inside `zip` itself) and have the flag select the branch; or > > - have one branch which has extra logic that checks for at least one > StopIteration and at least one item in each iteration to see if it should > raise.
And how much do you think that costs, compared to the overall cost of running the entire zip() function, including consumption of yielded results by the calling frame? _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/LDUDSLWQDZNNMSRKKNMOEC7NSVTUEKCC/ Code of Conduct: http://python.org/psf/codeofconduct/
