how to make two nested loops in python code example

Example 1: how to create a nested loop in python

for i in range(5):
  for j in range(i):
    # you can add many for loops or you can just write any code

Example 2: python combine nested for loops

from itertools import product
dice_sides = [1, 2, 3, 4, 5, 6]
coin_sides = ['Heads', 'Tails']

for die,coin in product(dice_sides, coin_sides):
    print(die,coin)