On 18/06/15 05:40, Anubhav Yadav wrote:
So I need to create a copy of the list before trying to iterate through the list.
Only if you are going to change it. The problem you had was that you were removing items from the thing you were iterating over. As a result the other items effectively moved up one place to fill the gap resulting in you stepping over some items without processing them. Similarly problems can ensue if you insert new items into a list while iterating over it. You may wind up processing some items twice while not processing the new items you added. It's just a bad idea to modify the structure of the thing you are iterating over. So, if you intend modifying the list structure make a copy. Otherwise you can iterate over the original list (or dictionary, or whatever) without problems. -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.amazon.com/author/alan_gauld Follow my photo-blog on Flickr at: http://www.flickr.com/photos/alangauldphotos _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
