python async await example
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Title: Understanding Python Async/Await with Code Examples
Introduction:
Python's async/await syntax provides a powerful way to write asynchronous code, making it easier to work with tasks that involve I/O-bound operations. In this tutorial, we'll explore the basics of async/await and provide practical examples to help you understand its usage.
Async functions are the building blocks of asynchronous programming in Python. They are defined using the async keyword before the def keyword. Here's a simple example:
In this example, asyncio.sleep(2) simulates a non-blocking sleep for 2 seconds. When you run this code, you'll notice that the function doesn't block the program; instead, it allows other tasks to execute while waiting.
The await keyword is used to wait for an awaitable object to complete. Common awaitable objects include async functions, coroutines, and tasks. Let's see an example using a coroutine:
In this example, coroutine_example() is a coroutine, and await asyncio.sleep(2) demonstrates how to wait for an asynchronous operation.
Asyncio allows you to run multiple asynchronous tasks concurrently using asyncio.gather() or asyncio.create_task(). Here's an example with both approaches:
In both examples, tasks task1() and task2() run concurrently. The first example uses asyncio.gather() to run tasks concurrently, while the second example uses asyncio.create_task() to create tasks and then awaits them individually.
Python's async/await syntax provides a flexible and efficient way to handle asynchronous programming. With the examples provided, you can start incorporating async/await into your code to write non-blocking and efficient programs, especially when dealing with I/O-bound operations.
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