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Asyncio Coroutines

Asyncio coroutines are a fundamental part of Python’s asyncio library, which is designed for writing concurrent code using the async/await syntax. Coroutines are special functions that can pause their execution to allow other coroutines to run, making them ideal for I/O-bound tasks where waiting for external resources (like network responses) is common.

You can chain coroutines together into linear sequences, a process often referred to as promise chaining or future chaining in other programming languages. This allows for a pipeline of tasks to be executed in a specific order, either dependent or independent of each other. There are various methods to achieve this in asyncio, including having coroutines manually chain themselves together ¹.

Additionally, coroutines can be run in the background by wrapping them in an asyncio.Task. This enables them to execute without blocking the main program flow, allowing for more efficient use of resources ².

If you have more specific questions about asyncio coroutines or their usage, feel free to ask!

Asyncio Coroutine Chaining

Super Fast Python

We can chain coroutines together into linear sequences In other languages, this is called promise chaining or future chaining. This allows a pipeline of dependent or independent tasks to be completed ...

How to Run Asyncio Coroutine in the Background

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You can wrap a coroutine in an asyncio.Task which will schedule it for later execution. This allows you to run coroutines in the background that do not block the caller. In this tutorial, you will dis...

Run One-Off Coroutine Outside of Asyncio

Super Fast Python

A coroutine cannot be run directly outside of a Python program. Attempting to “call” a coroutine will result in RuntimeWarning messages. Attempting to await a coroutine from a Python program results i...

How to Get the Asyncio Task for a Coroutine

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You can get an asyncio.Task for a coroutine by searching through all running tasks. In this tutorial, you will discover how to get an asyncio task for a coroutine in Python. Let’s get started. Need a ...

How to Execute Multiple Coroutines with asyncio.Runner

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You can execute multiple coroutines in the same event loop using the asyncio.Runner class in the high-level asyncio API. This is a new feature provided in Python 3.11. Before the addition of the async...

How to Run an Asyncio Coroutine in Python

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You can run an asyncio coroutine via the run() function, by awaiting it within another coroutine, or by scheduling it as Task. In this tutorial, you will discover how to run a coroutine with asyncio i...

Asyncio Coroutine Object Methods in Python

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We can define coroutine methods on custom Python objects. This allows methods on custom Python objects to use async/await syntax, such as awaiting other coroutines and tasks and allows the custom coro...

Asyncio Concurrent Tasks

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We can execute asyncio tasks and coroutines concurrently, a main benefit of using asyncio. There are four main ways that we can achieve this, including issuing coroutines as independent tasks and awai...

How to Get Return Value From Asyncio Coroutine

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You can get return values from coroutines and tasks in asyncio by awaiting them directly. In this tutorial, you will discover how to get return values in asyncio. Let’s get started. Asyncio Return Val...

Asyncio Coroutine Function and Coroutine Types

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You can programmatically identify coroutine functions and coroutines using the inspect module API. Coroutines have a specific “coroutine” type that shares methods with generators as well as the awaita...

How to Get the Asyncio Coroutine from a Task in Python

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You can get the coroutine wrapped in a task by calling the get_coro() method on the Task object. In this tutorial, you will discover how to get the coroutine from an asyncio task in Python. Let’s get ...

Python: Intro to Asyncio

Python in Plain English

The name of asyncio may make us think that this library is only good for I/O operations, but it has the functionality to handle other types of operations as well by interoperating with multithreading ...