Understanding Asynchronous Programming in Python with async and await

Asynchronous programming allows you to write concurrent code using async and await syntax. It’s useful for tasks like I/O operations where waiting for external resources can slow down your program.

Basic Concepts

• Coroutine: A function defined with async def.
• await: Used to pause a coroutine until another coroutine completes.

Example

import asyncio

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

asyncio.run(say_hello())

Using asyncio.gather()

Run multiple coroutines concurrently:

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

asyncio.run(main())

Conclusion

Asynchronous programming in Python enhances performance for I/O-bound tasks. Understanding async and await is essential for modern Python development.