how to reverse an array in python without using function code example

Example 1: how to reverse a list in python

mylist
[1, 2, 3, 4, 5]

mylist[::-1]
[5, 4, 3, 2, 1]

Example 2: how to reverse array in python

>>> L = [0,10,20,40]
>>> L[::-1]
[40, 20, 10, 0]