''' Name: 
    Computing ID: 

    Purpose: demonstrate nested loop abilities

    Problem: Get an integer n from the user and then print an n-by-n
       grid of one-digit numbers, where the digit in the r-th row, c-th
       column is the the last digit of the product r x c
'''

# get dimension of the digit box
reply = input( "Enter integer: " )
n = int( reply )

# print an n-by-n grid one row at a time.
for r in range( 1, n + 1 ) :
    # handle printing of the row r entries for the digit box
    ...

    # finish processing of row
    ...