assign value in list of list

Asked Apr 17 '15 at 13:35

Active Apr 17 '15 at 13:37

Viewed 42 times

I just want to ask a simple question I created a list of list and want to change one value in the list by index it:

A = [[0] * 3] * 3
print A, A[0][0]
A[0][0] = 34343
print A

The result is:
[[0, 0, 0], [0, 0, 0], [0, 0, 0]] 0
[[34343, 0, 0], [34343, 0, 0], [34343, 0, 0]]

Why this happens?Where am I wrong?

edited Apr 17 '15 at 13:36

Bhargav Rao

50,140
28
121
140

asked Apr 17 '15 at 13:35

stevenhz

Also have a look at http://stackoverflow.com/questions/17702937/generating-sublists-using-multiplication-unexpected-behavior – Bhargav Rao Apr 17 '15 at 13:37
Solved. I know the problem now – stevenhz Apr 17 '15 at 13:38

assign value in list of list

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