aiohttp
作者:互联网
import aiohttp import asyncio async def fetch(session, url): async with session.get(url) as response: return await response.text(), response.status async def main(): async with aiohttp.ClientSession() as session: html, status = await fetch(session, 'https://cuiqingcai.com') print(f'html: {html[:100]}...') print(f'status: {status}') if __name__ == '__main__': loop = asyncio.get_event_loop() loop.run_until_complete(main())
import aiohttp import asyncio async def main(): params = {'name': 'germey', 'age': 25} async with aiohttp.ClientSession() as session: async with session.get('https://httpbin.org/get', params=params) as response: print(await response.text()) if __name__ == '__main__': asyncio.get_event_loop().run_until_complete(main())
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')
import aiohttp import asyncio async def main(): data = {'name': 'germey', 'age': 25} async with aiohttp.ClientSession() as session: async with session.post('https://httpbin.org/post', data=data) as response: print(await response.text()) if __name__ == '__main__': asyncio.get_event_loop().run_until_complete(main())
async def main(): data = {'name': 'germey', 'age': 25} async with aiohttp.ClientSession() as session: async with session.post('https://httpbin.org/post', json=data) as response: print(await response.text())
import aiohttp import asyncio async def main(): data = {'name': 'germey', 'age': 25} async with aiohttp.ClientSession() as session: async with session.post('https://httpbin.org/post', data=data) as response: print('status:', response.status) print('headers:', response.headers) print('body:', await response.text()) print('bytes:', await response.read()) print('json:', await response.json()) if __name__ == '__main__': asyncio.get_event_loop().run_until_complete(main())
设置超时
import aiohttp import asyncio async def main(): timeout = aiohttp.ClientTimeout(total=1) async with aiohttp.ClientSession(timeout=timeout) as session: async with session.get('https://httpbin.org/get') as response: print('status:', response.status) if __name__ == '__main__': asyncio.get_event_loop().run_until_complete(main())
控制并发量
import asyncio import aiohttp CONCURRENCY = 5 URL = 'https://www.baidu.com' semaphore = asyncio.Semaphore(CONCURRENCY) session = None async def scrape_api(): async with semaphore: print('scraping', URL) async with session.get(URL) as response: await asyncio.sleep(1) return await response.text() async def main(): global session session = aiohttp.ClientSession() scrape_index_tasks = [asyncio.ensure_future(scrape_api()) for _ in range(10000)] await asyncio.gather(*scrape_index_tasks) if __name__ == '__main__': asyncio.get_event_loop().run_until_complete(main())
标签:__,aiohttp,session,async,main,response,asyncio 来源: https://www.cnblogs.com/angdh/p/14774827.html