Something else that may look confusing can be a break statement; in a for i in range(5) for j in range(5) for k in range(5): ... break
does it break the inner "k" loop, going to the next "j" (as it would happen with 3 nested loops), or does it end the whole for statement? Similar question with "continue" On 4 October 2016 at 12:37, Nick Coghlan <[email protected]> wrote: > On 4 October 2016 at 14:32, Ken Kundert <[email protected]> wrote: > > For example, it was suggested that one could simplify a multi-level loop > by > > moving the multiple levels of for loop into a separate function that > acts as > > generator. And that is a nice idea, but when writing it, the writing of > the > > generator function represents a speed bump. Whereas writing something > like the > > following is simple, compact, quick, and obvious. There is no reason why > it > > should not be allowed even though it might not always be the best > approach to > > use: > > > > for i in range(5) for j in range(5) for k in range(5): > > ... > > > > And I would really like to be able to write loops of the form: > > > > for item in items if item is not None: > > ... > > > > It is something I do all the time, and it would be nice if it did not > consume > > two levels on indentation. > > And when you add the "else" clause that's supported by both "for" and > "if", what does that mean in the abbreviated form? > > for item in items if item is not None: > ... > else: > # ??? > > Or is the implicit proposal that this form be special cased to > disallow the "else" clause? > > Comprehensions don't have that concern, as they don't support "else" > clauses at all. > > Cheers, > Nick. > > -- > Nick Coghlan | [email protected] | Brisbane, Australia > _______________________________________________ > Python-ideas mailing list > [email protected] > https://mail.python.org/mailman/listinfo/python-ideas > Code of Conduct: http://python.org/psf/codeofconduct/ > -- Daniel F. Moisset - UK Country Manager www.machinalis.com Skype: @dmoisset
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