How to implement Async HTTP Request in Python

1import asyncio
2import aiohttp
3from typing import List
4
5# Single async request
6async def fetch_url(session: aiohttp.ClientSession, url: str) -> str:
7    async with session.get(url, timeout=aiohttp.ClientTimeout(total=10)) as response:
8        return await response.text()
9
10# Fetch multiple URLs concurrently
11async def fetch_multiple(urls: List[str]) -> List[str]:
12    async with aiohttp.ClientSession() as session:
13        tasks = [fetch_url(session, url) for url in urls]
14        return await asyncio.gather(*tasks)
15
16# Usage
17url_list = [
18    'https://api.github.com/users/github',
19    'https://api.github.com/users/google',
20    'https://api.github.com/users/facebook'
21]
22
23results = asyncio.run(fetch_multiple(url_list))
24print(results)
25
26# Parse JSON from async request
27async def fetch_json(url: str) -> dict:
28    async with aiohttp.ClientSession() as session:
29        async with session.get(url) as response:
30            return await response.json()
31
32# Batch requests with limit
33async def batch_fetch(urls: List[str], limit: int = 5):
34    semaphore = asyncio.Semaphore(limit)
35    async def bounded_fetch(url):
36        async with semaphore:
37            async with aiohttp.ClientSession() as session:
38                async with session.get(url) as response:
39                    return await response.json()
40    return await asyncio.gather(*[bounded_fetch(url) for url in urls])