beginner
Sum of List Elements
Learn how to calculate the sum of all elements in a Python list.
Practice the fundamental skill of iterating through a list and accumulating values.
📚 Concepts & Theory
Working with Lists
Lists store multiple items:
nums = [1, 2, 3]
for n in nums:
print(n)🎯 Your Challenge
Write a function sum_list that returns the sum of all numbers in a list.
📝 Starter Code
Python
def sum_list(numbers):
pass
print(sum_list([1, 2, 3, 4, 5]))Solution
Python
def sum_list(numbers):
total = 0
for num in numbers:
total += num
return total
print(sum_list([1, 2, 3, 4, 5]))Explanation
We use an accumulator pattern.
❓ Frequently Asked Questions
Use a loop or sum()