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---
title: "Python: How to load multiple web pages in parallel"
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date: 2022-05-15
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---
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This article describes how to load the content of multiple web pages from multiple urls in parallel with python.
<!--more-->
## Step 1. Installation of aiohttp
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First you need to install an aiohttp package. To install aiohttp run the command:
```bash
pip install aiohttp[speedups]
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```
The `[speedups]` suffix is needed to install aiohttp accelerating packages - aiodns and cchardet.
## Step 2. Creation of a script
Then create a main.py file with this code:
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```python
import aiohttp
import asyncio
import socket
async def fetch_urls(urls):
resolver = aiohttp.AsyncResolver()
connector = aiohttp.TCPConnector(resolver=resolver, family=socket.AF_INET, use_dns_cache=False)
session = aiohttp.ClientSession(connector=connector)
async def fetch_url(url, session):
async with session.get(url) as resp:
print(resp.status)
print(await resp.text())
tasks = [fetch_url(url, session) for url in urls]
await asyncio.gather(*tasks)
await session.close()
loop = asyncio.get_event_loop()
urls = ['http://httpbin.org/get?key=value1', 'http://httpbin.org/get?key=value2', 'http://httpbin.org/get?key=value3']
loop.run_until_complete(fetch_urls(urls))
```
Now you can run main.py file with the command:
```bash
python3 main.py
```
You will see this output:
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```
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200
{
"args": {
"key": "value2"
},
"headers": {
"Accept": "*/*",
"Accept-Encoding": "gzip, deflate",
...
```
All three queries will be executed in parallel. You can add any urls to the `urls` list, for example:
```python
urls = ['https://yandex.com', 'https://google.com', 'https://yahoo.com']
```
In order to make HEAD, POST, PUT, DELETE requests, just replace `session.get(url)` in your code with the appropriate method:
```python
session.post('http://httpbin.org/post', data=b'data')
session.put('http://httpbin.org/put', data=b'data')
session.delete('http://httpbin.org/delete')
session.head('http://httpbin.org/get')
session.options('http://httpbin.org/get')
session.patch('http://httpbin.org/patch', data=b'data')
```