New submission from ChrisRands <chrisran...@gmail.com>:
This arose from this SO question: https://stackoverflow.com/questions/52446415/line-in-iterfp-readline-rather-than-line-in-fp The example given in the docs: with open('mydata.txt') as fp: for line in iter(fp.readline, ''): process_line(line) Is exactly equivalent to the following because an empty string is only returned by readline at the EOF: with open('mydata.txt') as fp: for line in fp: process_line(line) The empty string '' sentinel value could be changed to another value to provide a possibly more meaningful example where the 2nd code snippet would not always produce the same result? ---------- assignee: docs@python components: Documentation messages: 325995 nosy: ChrisRands, docs@python priority: normal severity: normal status: open title: Improve documentation example for using iter() with sentinel value _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue34764> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
