why this recursive function returns a tuple?

i wrote a simple recursive script to change decimal to hexadecimal, but it returns the answer in tuple, its not a big deal, i get what i want, but i would like to understand why i get a tuple, anyone could explain it?

this is the script:

def printDigits(n,base):
    if n < base:
        return n 
    else:
        return printDigits(n//base, base) , n % base

and for

print(printDigits(245, 16))

i get

(15, 5)

>Solution :

The return in the else statement of printDigits contains a comma, which is how you define a tuple in Python.

return printDigits(n//base, base) , n % base