Python Asyncio Architecture: Event Loops, Tasks, and Futures Explained
Understanding Python’s asyncio architecture is crucial for writing efficient asynchronous code. Here’s a comprehensive guide. Event Loop The event loop is the core of asyncio. It manages and distributes the execution of different tasks. import asyncio async def main(): print("Hello") await asyncio.sleep(1) print("World") # Event loop runs the coroutine asyncio.run(main()) Coroutines Coroutines are functions defined with async def. They can be paused and resumed. async def fetch_data(): await asyncio.sleep(1) return "data" # Coroutine object coro = fetch_data() Tasks Tasks wrap coroutines and schedule them on the event loop. ...