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Introduction
Function basics
8. Using a function return value
Summary

## Instruction

You can assign the result of a function to a variable:

def factorial(number):
score = 1
while number > 1:
score = score * number
number = number - 1
return score

result = factorial(5)


After the function returns, the result variable is assigned the value of factorial(5). If you print the value of the result, you get the 120 – the return value of this function with 5 passed as an argument. However, note that you don't have to assign the function's return value to a variable in order to use it later in your code:

user_number = int(input('Please provide a natural number: '))
print('The factorial for', user_number, 'is', factorial(user_number))


## Exercise

We've already created the factorial function for you. Assign the result of factorial(3) to a variable named a and factorial(4) to a variable named b. Then, print sum of these two variables. 