Is it good version???

```
def digit_sum(n):
total = 0
while n > 0:
total += n%10
n = (n - n%10)/10
return total
```

Is it good version???

```
def digit_sum(n):
total = 0
while n > 0:
total += n%10
n = (n - n%10)/10
return total
```

this line:

`n = (n - n%10)/10`

you could simply divide n by 10:

`n = n / 10`

why n - n%10?

to be certain, i would use floor division (`//`

) to make sure you don't end up with decimal number which might make your loop run longer then needs be

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