On 2008-06-25, python_newbie <[EMAIL PROTECTED]> wrote: > On 24 Haziran, 04:33, Terry Reedy <[EMAIL PROTECTED]> wrote: > Thanks for all answers. At the end i ve only one point. If a decide to > copy list to iterate when will i have to do this ? Before the > iteration ? And then iterate through one list and change value of the > other ?
Before starting the iteration would be a good point.... I usually do in such cases: for x in mylist[:]: ... making a copy just before the for loop starts. Lately, I have started avoiding in-place modification of lists. Instead, I construct a new list from scratch inside the for-loop, and replace the old list with the newly constructed list afterwards like: new_list = [] for x in mylist: .... new_list.append(x) mylist = new_list by appending a different value than the original or by not appending, you can influence the contents of the new list. I find this solution nicer than in-place modification of an existing list. Sincerely, Albert -- http://mail.python.org/mailman/listinfo/python-list
