[EMAIL PROTECTED] wrote: > Steve Holden wrote: > > >>Yomgui: I am not a language lawyer, but I think you can feel safe >>returning from inside a loop. Just as a matter of interest, how else >>would you propose to implement the functionality Mike showed: >> >> >>>>>>def f(): >>> >>>... for i in range(20): >>>... if i > 10: return i >>>... >>> >> >>Python is supposed to cleanly express the programmer's intent. I can;t >>think of a cleaner way that Mike's - can you? > > Interestingly, I just saw a thread over at TurboGears(or is it this > group, I forgot) about this multiple return issue and there are people > who religiously believe that a function can have only one exit point. > > def f(): > r = None > for i in range(20): > if i > 10: > r = 10 > break > if r is None: something > else: return r > Well, I'm happy in this instance that practicality beats purity, since the above is not only ugly in the extreme it's also far harder to read.
What are the claimed advantages for a single exit point? I'd have thought it was pretty obvious the eight-line version you gave is far more likely to contain errors than Mike's three-line version, wouldn't you agree? regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ -- http://mail.python.org/mailman/listinfo/python-list
