pythonbeginner10 minutes

Fix the Bug in the Sum of Even Numbers Function

A simple Python function is intended to sum all even numbers from a list, but it contains a bug. Your task is to identify and fix the bug so the function returns the correct sum of even numbers.

Challenge prompt

The function sum_even_numbers(nums) is supposed to take a list of integers and return the sum of all even numbers in the list. However, it currently returns the wrong result. Fix the bug in the function so it returns the correct sum.

Guidance

• Check how the function is checking if a number is even.
• Ensure the function correctly accumulates the sum of even numbers only.
• Test the function with different lists to confirm the fix.

Hints

• Recall that even numbers are divisible by 2 with no remainder.
• Look carefully at the if condition that checks for even numbers.

Starter code

def sum_even_numbers(nums):
    total = 0
    for num in nums:
        if num % 2 == 1:
            total += num
    return total

Expected output

sum_even_numbers([1, 2, 3, 4, 5, 6]) should return 12

Core concepts

modulus operatorfor loopsconditional statementsaccumulators

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