python-aiohttpHow to download a file with Python Aiohttp?

Using the Aiohttp library, you can download a file with Python in a few simple steps.

import aiohttp

async with aiohttp.ClientSession() as session:
    async with session.get('http://example.com/file.zip') as resp:
        with open('file.zip', 'wb') as f_handle:
            while True:
                chunk = await resp.content.read(1024)
                if not chunk:
                    break
                f_handle.write(chunk)

This code will download the file file.zip from http://example.com/file.zip and save it to the current directory.

The code consists of the following parts:

1. import aiohttp - imports the Aiohttp library.
2. async with aiohttp.ClientSession() as session - creates a client session.
3. async with session.get('http://example.com/file.zip') as resp - sends a GET request to the specified URL.
4. while True - loops until the end of the file is reached.
5. chunk = await resp.content.read(1024) - reads the response content in chunks of 1024 bytes.
6. if not chunk - checks if the chunk is empty.
7. break - breaks out of the loop.
8. f_handle.write(chunk) - writes the chunk to the file.

Helpful links

• Aiohttp Documentation

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