On Thu, 20 Jul 2023 at 17:09, Dom Grigonis <dom.grigo...@gmail.com> wrote: > > On 20 Jul 2023, at 09:48, anthony.flury <anthony.fl...@btinternet.com> wrote: > In Python then a better way might be > > result = temp := bar() if temp else default > > This way only bar() and default are evaluated and invoked once. >
I presume you want a more complicated expression than just "if temp", since this is no better than "bar() or default". But if you DO want some other condition, this would be how you'd write it: result = temp if (temp := bar()) is None else default Or, better: result = bar() if result is None: result = default ChrisA _______________________________________________ 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/FI376QAZ7FAA7ZFJPELG73LXR5VFIHBD/ Code of Conduct: http://python.org/psf/codeofconduct/
