In [12]: class Base:
       2     def __init__(self):
       3         print("I'm base")
       4
       5 class Child(Base):
       6     def __init__(self):
       7         print("I'm child")
       8

In [13]: c = Child()
I'm child

In [14]: class Base:
       2     def __init__(self):
       3         print("I'm base")
       4
       5 class Child(Base):
       6     def __init__(self):
       7         super().__init__()
       8         print("I'm child")
       9

In [15]: c = Child()
I'm base
I'm child