Answer: Python Puzzler #3602

The answer is B. The program prints:

buzz

This answer was checked by running the program for real.

Why?

A dictionary stores pairs: a key and its value. sounds["bee"] looks up the key ‘bee’ and gives back its value.

Trace table

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

keyvalue
beebuzz
sheepbaa
dogwoof
catmeow

The code again

sounds = {
    "bee": "buzz",
    "sheep": "baa",
    "dog": "woof",
    "cat": "meow",
}
print(sounds["bee"])

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