[FIXED] Force type to be integer and not float in python

Issue

I am writing a simple program that will calculate the sum of the digits. So for example 123 would be 1 + 2 + 3 = 6 simple. When I write my code

def sumOfNumber(number):
    sum = 0

    while(number >= 1):
        temp = number % 10
        sum += temp
        number /= 10

    return sum

main():
    sumOfNumber(123)
    # 6.53

Can anyone explain this?

Solution

You seem to be using Python3 where division / outputs floats. Replace the inplace division /= with integer division //= to get rid of decimals.

number //= 10

Although, if you want to manipulate a number digit by digit, it is better to cast it to a str. This allows to loop over its digits and sum them.

def sumOfNumber(number):
    digits = str(number)
    sum_ = 0

    for d in digits:
        sum_ += int(d)

    return sum_

sumOfNumber(123) # 6

Using the builtin sum function, you can even rewrite this function in a single line.

def sumOfNumber(number):
    return sum(int(x) for x in str(number))

Answered By - Olivier Melançon