Unexpected list behavior in Python

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The following:

list_reversed = list

makes the two variables refer to the same list. When you change one, they both change.

To make a copy, use

list_reversed = list[:]

Better still, use the builtin function instead of writing your own:

list_reversed = reversed(list)

P.S. I’d recommend against using list as a variable name, since it shadows the builtin.

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