On Feb 27, 2018 09:50, Alan Gauld via Tutor <tutor@python.org> wrote: > > On 27/02/18 05:13, Cameron Simpson wrote: > > > hard to debug when you do. That's not to say you shouldn't use them, but > > many > > people use them for far too much. > > > > Finally, you could also consider not using a regexp for this particular > > task. > > Python's "int" class can be called with a string, and will raise an > > exception > > And, as another alternative, you can use all() with a > generator expression: > > >>> all(c.isdigit() for c in '1234') > True > >>> all(c.isdigit() for c in '12c4') > False
I never understood why this is syntactically correct. It's like two parentheses are missing. This I understand: all((c.isdigit() for c in '12c4')) Or this: all([c.isdigit() for c in '12c4']) Or this: all((True, False)) But the way you wrote it, the generator expression just "floats" in between the parentheses that are part of the all() function. Is this something special about all() and any()? _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
