On Jan 29, 8:34 am, William McBrine <[EMAIL PROTECTED]> wrote: > Look at this -- from Python 2.5.1: > > >>> a = [1, 2, 3, 4, 5] > >>> for x in a: > > ... if x == 3: > ... a.remove(x) > ... print x > ... > 1 > 2 > 3 > 5 > > >>> a > [1, 2, 4, 5] > > Sure, the resulting list is correct. But 4 is never printed during the > loop! > (snipped)
If you're going to delete elements from a list while iterating over it, then do it in reverse order: >>> a = [ 98, 99, 100 ] >>> last_idx = len(a) - 1 >>> for i, x in enumerate(a[::-1]): ... if x == 99: del(a[last_idx - i]) ... print x ... 100 99 98 >>> a [98, 100] -- Hope this helps, Steven -- http://mail.python.org/mailman/listinfo/python-list
