Answer: Python Puzzler #1694

The answer is D. The program prints:

False
What the program prints
Checked by running the program for real.

Why?

First Python works out each side: 3 > 9 is False and 9 < 4 is False. or is True only if at least one side is True.

Trace table

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

partvalue
3 > 9False
9 < 4False

The code again

print(3 > 9 or 9 < 4)

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