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Asynchronous Programming with asyncio

This repository demonstrates the usage of asyncio, a Python library for writing asynchronous code using coroutines, event loops, and tasks.

What is asyncio?

asyncio is a built-in Python library that enables the development of concurrent and asynchronous applications. It provides a framework for writing single-threaded concurrent code using coroutines, multiplexing I/O access over sockets and other resources, running network clients and servers, and other related primitives.

With asyncio, you can write code that efficiently handles concurrent operations without the need for multiple threads or callbacks. It leverages the async and await syntax introduced in Python 3.5 to define coroutines, which are special functions that can be paused and resumed. This allows you to write non-blocking, cooperative multitasking code that can handle I/O-bound operations efficiently.

Features of asyncio

  • Coroutines: asyncio allows you to write asynchronous code using coroutines. Coroutines are functions defined with the async keyword and can be suspended using the await keyword.

  • Event Loop: asyncio provides an event loop, which is a central execution component that schedules and runs coroutines, handles I/O operations, and manages callbacks.

  • Tasks: Tasks are higher-level abstractions over coroutines. They represent the execution of a coroutine in an event loop. Tasks can be used to track the progress and retrieve results from coroutines.

  • Concurrency: asyncio enables efficient concurrent programming. It supports running multiple coroutines concurrently within a single thread, allowing you to achieve concurrency without the need for multiple threads or processes.

  • Network Operations: asyncio includes components for network programming, such as clients and servers. It provides support for TCP, UDP, SSL, and other protocols.

  • Integration: asyncio can be integrated with other libraries and frameworks. It provides compatibility with existing codebases and allows you to combine asynchronous code with synchronous code as needed.

Getting Started

To run the examples in this repository, make sure you have Python 3.7 or later installed. Clone the repository and install the required dependencies using the following steps:

  1. Clone the repository:

    git clone https://github.com/barzansaeedpour/advanced_python.git

  2. Navigate to the project directory:

    cd "asyncronous in python (asyncio)"

  3. Create a virtual environment (optional but recommended):

    python3 -m venv venv

  4. Activate the virtual environment:

    • Windows:

      venv\Scripts\activate

    • Unix/macOS:

      source venv/bin/activate

  5. Install the required dependencies:

    pip install -r requirements.txt

  6. Run the desired example script:

    python example.py

Examples

This repository includes several examples that demonstrate various aspects of asyncio:

  1. example1.py: Basic example showcasing the usage of async and await to define coroutines.

  2. example2.py: Demonstrates the event loop and the execution of multiple coroutines concurrently.

  3. example3.py: Illustrates the usage of tasks to track the execution of coroutines.

  4. example4.py: Shows how to perform asynchronous network operations with asyncio.

Feel free to explore and modify the examples to further understand the capabilities of asyncio.