On Fri, Sep 21, 2012 at 2:47 PM, Pavel Andreev <apn...@gmail.com> wrote:
>
> f=[[0]*3]*3 # array initialization
The above isn't giving you what you want. All 3 sublists are the same object:
>>> f = [[0]*3]*3
>>> map(id, f)
[149391980, 149391980, 149391980]
Do this instead:
>>> f = [[0]*3 for i in range(3)]
Each iteration in the comprehension creates a new list:
>>> map(id, f)
[149392364, 149392012, 149392428]
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