Python 2024 Development Tutorials, Guides & Insights

class DebugBase:
    def __init_subclass__(cls, **kwargs):
        print(f"Creating subclass {cls.__name__}")
        super().__init_subclass__(**kwargs)

class Subclass(DebugBase):
    pass
# Output: Creating subclass Subclass

• Use metaclasses sparingly; they add complexity.
• Prefer composition and decorators for simpler use cases.
• Document your metaclasses thoroughly for maintainability.

import asyncio

async def greet():
    print("Hello!")
    await asyncio.sleep(1)
    print("Goodbye!")

asyncio.run(greet())

Combine multiple coroutines to run concurrently: