What is the asyncio library in Python?

What is the asyncio library in Python?

The asyncio library in Python is used for writing concurrent code using the async/await syntax. It allows you to manage asynchronous I/O operations, making it easier to handle tasks like network requests or file operations without blocking the main thread.

Can you give me an example of how to use asyncio?

Sure! Here's a simple example:

import asyncio

async def say_hello():
    print('Hello')
    await asyncio.sleep(1)
    print('World!')

asyncio.run(say_hello())

This code defines an asynchronous function that prints 'Hello', waits for 1 second, and then prints 'World!'. You can run multiple such functions concurrently.

What are some common use cases for asyncio?

Common use cases for asyncio include web scraping, handling multiple network connections, and performing I/O-bound tasks like reading/writing files or databases without blocking the application.

Is asyncio suitable for CPU-bound tasks?

No, asyncio is primarily designed for I/O-bound tasks. For CPU-bound tasks, you might want to use multiprocessing or threading instead.