It also seems fair to do the following (if the modified list is to be used more than once - to avoid building the modified list more than once)?
array = [item*2 for item in array] # instead of >>>> for item in array: item *= 2 Regards, Trilok -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Noufal Ibrahim Sent: Monday, August 20, 2007 8:29 PM To: János Juhász Cc: tutor@python.org Subject: Re: [Tutor] iterate list items as lvalue János Juhász wrote: > Dear Tutors! > > I know a python list is a mutable object. >>>> array = [1,2,3,4,5] > > So I can modify any item in it. >>>> for index in range(len(array)): array[index] *= 2 > ... >>>> array > [2, 4, 6, 8, 10] > > So I typed this: >>>> for item in array: item *= 2 > ... >>>> array > [1, 2, 3, 4, 5] You usually don't do things like that in python as far as I know. You just work on a generated modified list. foo = range(1,6) for i in [x*2 for x in foo]: do_whatever_you_want_with(i) -- ~noufal _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
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