121
I'd like to rotate a Python list by an arbitrary number of items to the right or left (the latter using a negative argument).
Something like this:
>>> l = [1,2,3,4]
>>> l.rotate(0)
[1,2,3,4]
>>> l.rotate(1)
[4,1,2,3]
>>> l.rotate(-1)
[2,3,4,1]
>>> l.rotate(4)
[1,2,3,4]
How might this be done?