On 6/12/07, Gabriel Genellina <[EMAIL PROTECTED]> wrote: > En Tue, 12 Jun 2007 06:34:49 -0300, exhuma.twn <[EMAIL PROTECTED]> escribió: > > > On Jun 12, 6:57 am, "Gabriel Genellina" <[EMAIL PROTECTED]> > > wrote: > >> for number in range(10,100): > >> for divisor in range(2,number): > >> if number % divisor == 0: > >> break > >> else: > >> print number, > >> > > > > Oh my. Would it not be an idea to rename this "else" into a "finally"? > > As Gabriel points out, the else-block gets executed after the for loop > > exits *normally*. In that case, is the "else" not semantically > > misleading? I would surely misunderstand it if I saw it the first time. > > No - finally already has a meaning, "do this always, even if an exception > occurred before". > The "else" clause is fired when a condition is not met: > > if condition: > do something when condition is true > else: > do something when condition is not true > > > while condition: > do something when condition is true > else: > do something when condition is not met > > > for x in iterable: > do something with x > else: > do something when there are no more x > > > You can think the above as: > > while there are still values in iterable: > do something with the next value > else: > do something when there are no more items >
This is a good way of phrasing it and I hope I can remember it, because for..else always gives me trouble. To me, "else" indicates the negative condition and I intuitively associate it with executing the loop early, not normal exit. Personally, I think a different keyword (maybe "after"?) would have done a better job of clarifying this. -- http://mail.python.org/mailman/listinfo/python-list
