On 11/05/17 02:50, Rafael Skovron wrote: > I dont understand why j can have any value other than zero in this: > > for i in range(1, 5): j = 0 while j < i: print(j, end = " ") j += 1
Because i can go as high as 4 (from range(1,5)->1,2,3,4). So lets consider that final case: i->4 j->0 j<i -> True print 0 j->1 j<i->True print 1 j->2 j<i->True j->3 print 3 j->4 j<4->False So you'd expect the output to go like this: i=1, j->0 i=2, j->0,1 i=3, j->0,1,2 i=4, j->0,1,2,3 And since you set the print end to be a space it will all run into one line: 0 0 1 0 1 2 0 1 2 3 Is that what you see? -- 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