Issue while using print function for class level function

Question

For this code:

class Test:
    def __init__(self):
        self.a=10
        self.b=20

    def display(self):
        print(self.a)
        print(self.b)

when I use print(t.display()) it gives me 10,20,None. I don't understand why None is appearing.

Answer 1

Every function returns None by default. If you print a function with no return statement, the function returns None and then prints None.