def func(x):
	print(x)
	x += 1
	return x

func(1)

from typing import List

def func(L: List[int]) -> None:
	print(*L)
	
def func2(L: List[int], x: int) -> List[int]:
	print(*L)
	return L[:x:-1]

func([1, 2, 3, 4])
ret = func2([1, 2, 3], 3)