Getting Started with aiohttp: Installing this Python Async HTTP Library

Feb 22, 2024 ยท 1 min read

The aiohttp library enables developers to make asynchronous HTTP requests in Python. It is a powerful tool for building asynchronous web applications and scraping websites.

To get started with aiohttp, the first step is to install it.


aiohttp can be installed via pip, Python's package manager:

pip install aiohttp

This will download and install the latest stable release of aiohttp.

For the bleeding edge development version, install directly from GitHub:

pip install git+

I recommend installing aiohttp inside a virtual environment to avoid conflicting with other Python packages.

Once installed, aiohttp can be imported in Python code:

import aiohttp

Version Considerations

The latest 3.x version of aiohttp requires Python 3.6 or higher.

For Python 3.5 support, install aiohttp 2.3.x:

pip install aiohttp==2.3.10

So check your Python version before installing aiohttp.

Next Steps

With aiohttp installed, you're ready to start making asynchronous HTTP requests.

Some things to try next:

  • Make a basic GET request to fetch a URL
  • Use aiohttp.ClientSession() for efficiently making multiple requests
  • POST form data or JSON to a web API
  • Write a basic async web server
  • Stream response content for large downloads
  • Handle errors and timeouts gracefully
  • The aiohttp documentation has many great examples to get you started.

    Browse by tags:

    Browse by language:

    The easiest way to do Web Scraping

    Get HTML from any page with a simple API call. We handle proxy rotation, browser identities, automatic retries, CAPTCHAs, JavaScript rendering, etc automatically for you

    Try ProxiesAPI for free

    curl ""

    <!doctype html>
        <title>Example Domain</title>
        <meta charset="utf-8" />
        <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1" />


    Don't leave just yet!

    Enter your email below to claim your free API key: