Answer: Python Puzzler #1476

The answer is D. The program prints:

7 3

Checked by running the program for real.

// divides and throws away the remainder: each friend gets 7 sweets. % gives the remainder: 3 sweets left over.

A trace table follows the program step by step. Here’s this one:

sum	answer
31 // 4	7
31 % 4	3

sweets = 31
friends = 4
print(sweets // friends, sweets % friends)

Try it: change one number in the program and predict the new output before you run it.