I'm trying to do a function that does n nn nnn but it returns differently from what I expected.-CodePudding

    number = str(input('Please input a number: '))

    def add_numbers(number):

    sum = 0
        for i in range (1,4):
        number = number * i
        sum  = int(number)

    return sum
 
    print(add_numbers(number))

Output for range (1,2) in the loop = 5
Output for range(1,3) in the loop = 60 Output for range (1,4) in the loop = 555615

I tried it for cases where the loop iterates only once or twice which results in 5, and 5 55 = 60, respectively. But when I run it for 3 times it returns 555615. I'm guessing that it returns the correct sum which is 615 but is then added with the string 555 (which I don't understand why this does happen.

CodePudding user response：

This should work:

number = str(input('Please input a number: '))

def add_numbers(number):
    number = int(number)
    sum = 0
    for i in range(1,4):
        number = number ** i
        sum  = int(number)

    return sum
 
print(add_numbers(number))

Output:

Please input a number:  5
15655

Instead of number * i you need number to the power of i or number ** i. Also, since you are passing add_numbers a value from input(), number is a string and you need it to be an int which number = int(number) does.

CodePudding user response：

sum will be like that = number *1 number *2 number *3 ... and u want = number number * number number * number * number so u should do that : sum = pow(number,i)