When I do:
a = [7,3,4]
b = a
b[0] = 10
b[0] is of course set to 10, but a[0] is also set to 10. Why is this?
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1Useful related reading: http://stackoverflow.com/questions/17246693/what-exactly-is-the-difference-between-shallow-copy-deepcopy-and-normal-assignm – NightShadeQueen Aug 28 '15 at 01:29
1 Answers
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b = a
This makes b and a reference to the same list object. If you want b to reference to a new list object that is a copy of a, try:
b = a[:]
Yu Hao
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