replace_first

from typing import Iterable
def replace_first(items: list) -> Iterable:
    """
    In a given list the first element should become the last one.
    An empty list or list with only one element should stay the same.
    """
    item = items.pop(0)
    return items.append(item)

print(list(replace_first([1, 2, 3, 4])))