Shift list elements to the right and shift list element at the end to the beginning

Question

I want to rotate elements in a list, e.g. - shift the list elements to the right so [\'a\',\'b\',\'c\',\'d\'] would become [\'d\',\'a\',\'b\',\'c\'], o

Answer 1

Simple use of slice syntax:

def shift(seq):
    return [seq[-1]] + seq[:-1]

assert shift([1, 2, 3, 4, 5]) == [5, 1, 2, 3, 4]

Generalized version with changeable shift:

def shift(seq, shift=1):
    return seq[-shift:] + seq[:-shift]

assert shift([1, 2, 3, 4, 5]) == [5, 1, 2, 3, 4]
assert shift([1, 2, 3, 4, 5], 2) == [4, 5, 1, 2, 3]