For simple inheritance such as class Base: def __init__(self, env: str = 'prod'): #... class Derived(Base): def __init__(self, env: str = 'prod'): super().__init__(str) How do I avoid redefining default constructor parameters in both classes? If I instantiate Derived() I do want env to default to 'prod', I just don't want to redefine the value in multiple classes. If I later decide that the default value should be something else (e.g. 'dev'), then I would have to change all derived constructors. I was thinking of something like class Base: def __init__(self, env: str = 'prod'): #... class Derived(Base): def __init__(self, env: str = None): if env is None: super().__init__() else: super().__init__(env) or maybe defining the default value as a global constant in the base class? Either method seems overly complex. What's the Pythonic way? Continue reading...
