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In Python 2.7 why is grid = [["A"]*5]*5 different than grid = [] grid.append[...]

Author Votes Δ
Marwan Alsabbagh 4 +3.66
Karl Knechtel 1 +0.03
Tim Lamballais 0 -3.89
Last visited: Sep 14, 2014, 5:07:29 AM