Python Nested Loops

 Nested Loop: If one loop contains another loop and so on is called nested loops.

Program:

for i in range(1,5):

    for j in range(1,i+1):

        print(i,j)

Output:

1 1

2 1

2 2

3 1

3 2

3 3

4 1

4 2

4 3

4 4