# Write a Python function to sum all the numbers in a list | Code

Use loop with a variable to sum all the numbers in a list in Python. Another option is to use the sum() function.

## Python function to sum all the numbers in a list example

Simple example code using for loop, to sum up of a number of the given list.

``````num = [1, 2, 3, 4, 5]
total = 0
for x in num:
total += x

print(total)
``````

Output:

Using sum() method

``````a = [1, 2, 3, 4, 5]
res = sum(a)

print(res)

``````

Output: 15

Using while() loop

``````total = 0
ele = 0

list1 = [11, 5, 17, 18, 23]

while ele < len(list1):
total = total + list1[ele]
ele += 1

print(total)``````

Output: 74

Recursive way

``````list1 = [11, 5, 17, 18, 23]

def sumOfList(lst, size):
if size == 0:
return 0
else:
return lst[size - 1] + sumOfList(lst, size - 1)

# Driver code
total = sumOfList(list1, len(list1))

print(total)
``````

Output: 74

Do comment if you have any doubts or suggestions on this Python sum topic

Note: IDE: PyCharm 2021.3 (Community Edition)

Windows 10

Python 3.10.1

All Python Examples are in Python 3, so Maybe its different from python 2 or upgraded versions.

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