Python Program to Calculate the Sum of All Even Numbers in a List

Python3 Examples

We will write a Python program to find the sum of all even numbers in a list. We will use a simple for loop to iterate over the list, and use a conditional statement to check whether each element is even.

Code explanation:

1. numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]: Define a list containing integers.
2. even_sum = 0: Initialize a variableeven_sumto store the sum of even numbers.
3. for num in numbers:: Use a for loop to iterate over each element in the list.
4. if num % 2 == 0:: Use a conditional statement to check whether the current element is even.num % 2 == 0indicates that ifnumthe remainder when divided by 2 is 0, thennumit is even.
5. even_sum += num: If the current element is even, add it toeven_sumin.
6. print("列表中所有偶数的和为:", even_sum): Output the sum of all even numbers in the list.

Output result:

列表中所有偶数的和为: 30

Python3 Examples