Austin Green added the comment:
Thanks for that; I suspected as much. Could not find anything about it
searching the web, so it's a feature not much discussed by the numerous Python
tutorials.
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New submission from Austin Green :
Not sure if this is a bug, cannot find any clarification in the documentation.
Please reassign it if need be.
Using the * operator to generate a list of lists:
>>> a = [[0]*3]*3
>>> a
[[0, 0, 0], [0, 0, 0], [0, 0, 0]]
gives a list of 3 l