On Tuesday, March 22, 2016 at 12:01:10 AM UTC+5:30, Maurice wrote: > Just figured why: > > If I type this on the kernel: > > weirdList = [[0]*3]*5 > > weirdList > Out[257]: [[0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0]] > > weirdList[0][0] = 1 > > weirdList > Out[259]: [[1, 0, 0], [1, 0, 0], [1, 0, 0], [1, 0, 0], [1, 0, 0]] > > All first elements of the sublists also changes. I dunno why...
When we write [[0] * 3] * 5, the [0] * 3 list is repeated 5 times its something like list,list,list,list,list if we change the 1st element of list, it gets reflected on all the 5 copies -- https://mail.python.org/mailman/listinfo/python-list
