What components and mechanisms interact with cooperative multitasking?

Cooperative multitasking in Python is usually implemented using coroutines and the asyncio mechanism. The main components and mechanisms that interact with cooperative multitasking include:

• Coroutine functions — functions defined with async def that can suspend their execution using await.
• Event Loop — the central mechanism that manages the execution of coroutines, schedules their start, and switches between them.
• Futures and Tasks — objects representing deferred computations that can be awaited.
• await and async for operators — allow suspending the coroutine until an asynchronous operation completes.

In cooperative multitasking, context switching occurs only at points where the coroutine explicitly yields control (await), enabling efficient management of asynchronous operations without threads and locks.

Example of a simple coroutine with asyncio:

import asyncio

async def say_hello():
    print('Hello')
    await asyncio.sleep(1)  # suspend the coroutine for 1 second
    print('World')

asyncio.run(say_hello())