On 2015年4月07日 03:11:30 +0100 Rob Cliffe <[email protected]> wrote: > > On 07/04/2015 02:08, Guido van Rossum wrote: > > I've taken the liberty of adding the following old but good rule to > > PEP 8 (I was surprised to find it wasn't already there since I've > > lived by this for ages): > > > > * > > > > Be consistent in return statements. Either all return statements > > in a function should return an expression, or none of them should. > > If any return statement returns an expression, any return > > statements where no value is returned should explicitly state this > > asreturn None, and an explicit return statement should be present > > at the end of the function (if reachable). > > > > Yes: > > > > def foo(x): > > if x >= 0: > > return math.sqrt(x) > > else: > > return None > > > That would seem to be good style and common sense. > > As a matter of interest, how far away from mainstream am I in > preferring, *in this particular example* (obviously it might be > different for more complicated computation), > > def foo(x): > return math.sqrt(x) if x >= 0 else None
I agree with you on this. Regards Antoine. _______________________________________________ Python-Dev mailing list [email protected] https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com