Thanks for the explanations. Regards,
Raj On Sat, Aug 23, 2008 at 3:41 PM, Scott David Daniels <[EMAIL PROTECTED]> wrote: > Rajanikanth Jammalamadaka wrote: >>>>> >>>>> list(itertools.dropwhile(lambda x: x<5,range(10))) >> >> [5, 6, 7, 8, 9] >> >> Why doesn't this work? >>>>> >>>>> list(itertools.dropwhile(lambda x: 2<x<5,range(10))) >> >> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] > > Because it drops _while_ the condition is True (which it is for > the first 0 entries in the sequence). What you want is: > > list(x for x in range(10) if 2 < x < 5) > > Note that: > list(itertools.dropwhile(lambda x: x<5, range(10)+range(10))) > is [5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9], > not [5, 6, 7, 8, 9, 5, 6, 7, 8, 9]. > > --Scott David Daniels > Scott.Daniels.Acm.Org > -- > http://mail.python.org/mailman/listinfo/python-list > -- "For him who has conquered the mind, the mind is the best of friends; but for one who has failed to do so, his very mind will be the greatest enemy." Rajanikanth -- http://mail.python.org/mailman/listinfo/python-list
