implementing Class Decorators in Python 3.9: Inheritance and Method Resolution Order
I just started working with I'm stuck on something that should probably be simple. I'm building a feature where I'm learning this framework and I'm relatively new to this, so bear with me... I've been banging my head against this for hours... I'm currently working with class decorators in Python 3.9, and I've run into an scenario with inheritance and method resolution order (MRO). I created a base class with a decorator that modifies a method, and when I try to subclass it, the method behavior is not what I expected. The original method in the base class is supposed to be overridden, but it seems like the decorator is interfering with the MRO, causing unexpected results. Here's a simplified version of my code: ```python def my_decorator(func): def wrapper(*args, **kwargs): print('Before calling', func.__name__) return func(*args, **kwargs) return wrapper class Base: @my_decorator def greet(self): return "Hello from Base" class Derived(Base): def greet(self): return "Hello from Derived" # Testing the classes base = Base() print(base.greet()) # Expected: Before calling greet -> Hello from Base d = Derived() print(d.greet()) # Expected: Before calling greet -> Hello from Derived ``` However, when I run this code, I observe that the output for `d.greet()` is not calling the decorator at all, and it just returns `Hello from Derived` directly without the print statement from the decorator. I tried explicitly calling the decorated method from the base class in the derived class, but that didn't yield the expected behavior either. I'm unsure how to resolve this—should I restructure my decorator or the way I'm using inheritance? Any insights would be appreciated. Any ideas how to fix this? I'm working in a macOS environment. The project is a mobile app built with Python. Any ideas what could be causing this? I'm using Python 3.9 in this project. Thanks for any help you can provide!