Answer: Python Puzzler #829

The answer is A. The program prints:

20

Why?

range(2, 9, 2) starts at 2, goes up in steps of 2, and stops before 9. So the loop adds 2 + 4 + 6 + 8. The total is 20.

Trace table

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

number	total after the loop body
2	2
4	6
6	12
8	20

The code again

total = 0
for number in range(2, 9, 2):
    total = total + number
print(total)