Python program to calculate the sum of elements in a list

Hello everyone, I am back to discuss a new Python program. Here we learn how to sum all the elements in a list quite easily. We use a predefined function called sum() and apply it to the list, the function returns the sum of all the elements in a list. So lets calculate the sum of elements in a list.

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Program on GitHub

Video :

You can also watch the video on YouTube here

Task :

To find the sum of all the elements in a list.

Approach :

• Read the input number asking for the length of the list using input() or raw_input().
• Initialize an empty list lst = [].
• Read each number using a for loop.
• In the for loop append each number to the list.
• Now we use a predefined function sum() to find the sum of all the elements in a list.
• Print the result.

Program on GitHub

Program :

lst = []
num = int(input('How many numbers: '))
for n in range(num):
    numbers = int(input('Enter number '))
    lst.append(numbers)
print("Sum of elements in given list is :", sum(lst))

Output :

Program on Github

That’s how we can calculate the sum of elements in a list.