On 2018-04-17 08:46, Chris Angelico wrote: > Having survived four rounds in the boxing ring at python-ideas, PEP > 572 is now ready to enter the arena of python-dev.
I would like to suggest one more motivating example for "Capturing condition values": multiple regex matches with 'elif'. if match := re.search(pat1, text): print("Found one:", match.group(0)) elif match := re.search(pat2, text): print("Found two:", match.group(0)) elif match := re.search(pat3, text): print("Found three:", match.group(0)) Without assignment expressions, you have an annoying choice between a cascade of 'else's with an ever-increasing indent and evaluating all the matches up front (so doing unnecessary work). -M- _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com