On Sun, Aug 23, 2009 at 1:36 PM, seb<sdemen...@gmail.com> wrote: > On Aug 23, 6:18 pm, John Posner <jjpos...@optimum.net> wrote: >> >> Hi, >> >> >> i was wondering if there is a syntax alike: >> >> >> for i in range(10) if i > 5: >> >> print i >> >> > You can write >> >> > for i in filter(lambda i: i > 5, range(10)): >> > print i >> >> > but >> >> > for i in range(10): >> > if i > 5: >> > print i >> >> > it' better readable, and >> >> > for i in range(6,10): >> > print i >> >> > it's event better. >> >> How about using a generator expression instead of a list? >> >> for i in (x for x in range(10) if x > 5): >> print i >> >> -John > > Indeed, but we could have the same syntax than for generators but > directly in the for statement as in > for variable in generator if condition: > body > > Is there a special reason for not doing so ? A rejected PEP ?
It's not been added since it's completely unnecessary (see the several alternatives already presented by others). There have been a few other mailinglist threads on adding essentially the same syntax. None have proved fruitful. Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
