On 13 April 2018 at 16:47, Chris Angelico <ros...@gmail.com> wrote: > Consider: > > pos = -1 > while pos := buffer.find(search_term, pos + 1) >= 0: > ... > > Once find() returns -1, the loop terminates. Should this need to be > parenthesized?
I've certainly been assuming that cases like that would need to be written as: pos = -1 while (pos := buffer.find(search_term, pos + 1)) >= 0: ... I'd write the equivalent C while loop the same way: int pos = -1 while ((pos = find(buffer, search_term, pos + 1)) >= 0): ... The parentheses around the assignment in C are technically redundant, but I consider finding the matching parenthesis to be straightforward (especially with text editor assistance), while I consider figuring out where the next lower precedence operator appears difficult (since I don't have the C operand precedence table memorized, and there isn't any simple way for my text editor to help me out). Cheers, Nick. -- Nick Coghlan | ncogh...@gmail.com | Brisbane, Australia _______________________________________________ Python-ideas mailing list Pythonfirstname.lastname@example.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/