Python program to calculate the sum of elements in a list

Avinash Nethala
programminginpython.com
2 min readApr 26, 2017

Hello everyone, am back to discuss about 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 functions returns the sum of all the elements in a list.

Sum of elements in a list — programminginpython.com

Task :

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

Approach :

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

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 :

Sum of elements in a list - programminginpython.com
Sum of elements in a list — programminginpython.com

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