Answer: Python Puzzler #3504

The answer is D. The program prints:

True

This answer was checked by running the program for real.

Why?

First Python works out each side: 9 > 1 is True and 1 < 5 is True. and is True only if both sides are True.

Trace table

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

partvalue
9 > 1True
1 < 5True

The code again

print(9 > 1 and 1 < 5)

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