Python 2024 Development Tutorials, Guides & Insights

Automatically register all subclasses using a metaclass.

class RegistryMeta(type):
    registry = {}

    def __new__(cls, name, bases, dct):
        new_class = super().__new__(cls, name, bases, dct)
        cls.registry[name] = new_class
        return new_class

class Base(metaclass=RegistryMeta):
    pass

class Derived1(Base):
    pass

class Derived2(Base):
    pass

print(RegistryMeta.registry)  # Output: {'Base': <class 'Base'>, 'Derived1': ..., 'Derived2': ...}

Debugging asynchronous code and generators can be tricky. Use these tools for better insights:

• asyncio.run: Use for structured coroutine execution.
• pytest-asyncio: A pytest plugin for testing coroutines.
• trio: An alternative asynchronous framework with powerful debugging features.