Copying 2D lists in python
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Published on 2010-03-29T23:10:34Z
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2010/03/29
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python
Hi I want to copy a 2D list, so that if I modify 1 list, the other is not modified.
For 1 D list, I just do this:
a = [1,2] b = a[:]
And now if I modify b, a is not modified.
But this doesn't work for 2D list:
a = [[1,2],[3,4]] b = a[:]
If I modify b, a gets modified as well.
How do I fix this?
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