yes. i understand now. but i use another trick. list is in vary size, so i do not wanna copy it. "Jim" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > MaHahaXixi wrote: > >>>>j = range(20) > >>>>print j > > > > [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19] > > > >>>>for k in j: > > > > if k <= 10: > > j.remove(k) > > > > > > > >>>>print j > > > > [1, 3, 5, 7, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19] > > > > > > > > Python 2.3.4 (#53, May 25 2004, 21:17:02) [MSC v.1200 32 bit (Intel)] on > > win32 > > Type "copyright", "credits" or "license()" for more information. > > > > i think python do convert there codes to such style: > > for (i = 0; i < len(j); i++) > > k = j[i] > > ...... > > > what do u think? > > > > > > I'm not quite sure of your question but with the second style you're not > attempting to change the original list but make a copy. That's perfectly > easy to do in Python as it is. The exampmle is a cautionary one about > changing the list on which you are iterating. > > Jim
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