Can you tell about the key features and working characteristics of Asyncio in Python?

Asyncio is a Python library for writing asynchronous code using coroutines, event loop, and non-blocking operations. Main features:

• An event loop manages the execution of tasks and coroutines.
• Coroutines are functions that can be paused and resumed using async and await keywords.
• Enables efficient I/O operations without blocking the main thread.
• Supports concurrent execution of tasks, improving performance when working with network operations or files.

Example of simple async code:

import asyncio

async def say_hello():
    await asyncio.sleep(1)
    print("Hello after 1 second")

async def main():
    await asyncio.gather(say_hello(), say_hello())

asyncio.run(main())

Here, two coroutines run in parallel without blocking each other.