[FIXED] Why I need to add an extra parenthesis for sum() function?

Issue

if sum() is a function in python, why does it need an extra parenthesis to work? Like other functions why sum() is not working with single parenthesis?

It's not working when it's like this:

num1 = int(input())
num2 = int(input())

total = sum(num1, num2)

print(total)

It is working fine when I'm adding an extra parenthesis. Why this is happening?

total = sum((num1, num2))

Solution

The sum function in python takes in a tuple or a list of numbers as the first parameter ( because it should be iterable) and returns the sum of the elements.

Check this

sum ( num1, num2,...) #Gives Type Error since int is non iterable
sum ((num1,num2,...)) #works
sum([num1,num2,...] #works

Answered By - vvk24

Answer Checked By - David Goodson (PHPFixing Volunteer)