Answer: Python Puzzler #797

The answer is C. The program prints:

12

Why?

range(2, 7, 2) starts at 2, goes up in steps of 2, and stops before 7. So the loop adds 2 + 4 + 6. The total is 12.

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

The code again

total = 0
for number in range(2, 7, 2):
    total = total + number
print(total)