What is async programming in Python

Async programming in Python is a technique that allows you to write concurrent code using the async/await syntax. This type of programming enables you to run code asynchronously, meaning that tasks can be executed without waiting for previous tasks to complete, which enhances performance particularly in I/O-bound operations.

By using the `async` keyword, you define a function that will return a coroutine. These coroutines can be paused and resumed, allowing the event loop to manage the execution of multiple tasks simultaneously. This is particularly useful in situations like web servers, where you need to handle multiple client requests at the same time without blocking the execution of other tasks.

Example of Async Programming in Python

import asyncio async def fetch_data(): print("Fetching data...") await asyncio.sleep(2) print("Data fetched!") async def main(): task1 = asyncio.create_task(fetch_data()) await task1 asyncio.run(main())

async programming Python async/await concurrency coroutines

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