Peter Kleiweg wrote:
> This does not what I want it to do:
>
> >>> a = [[]] * 6
> >>> a[3].append('X')
> >>> a
> [['X'], ['X'], ['X'], ['X'], ['X'], ['X']]
>
> This does what I want:
>
> >>> b = [[] for _ in range(6)]
> >>> b[3].append('X')
> >>> b
> [[], [], [], ['X'], [], []]
>
> The first is clear and wrong. The second is hairy and right.
> Is there a way to do it clear and right?
http://www.python.org/doc/faq/programming.html#how-do-i-create-a-multidimensional-list
</F>
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