Answer: Python Puzzler #1801

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 > 4 is False and 4 < 7 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
3 > 4False
4 < 7True

The code again

print(3 > 4 and 4 < 7)

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