Answer: Python Puzzler #482

The answer is B. The program prints:

2
What the program prints
Checked by running the program for real.

Why?

count goes through the string and counts how many times ‘o’ appears.

Trace table

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

lettermatches?
b
e
e
p
(space)
b
oyes
oyes
p

The code again

word = "beep boop"
print(word.count("o"))

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