python-aiohttp

 

# _*_ coding: utf-8 _*_
	"""
	转载别人的——xianhu
	"""
	import asyncio
	import aiohttp
	# 简单实例
	async def aiohttp_01(url):
	async with aiohttp.ClientSession() as session:
	async with session.get(url) as resp:
	print(resp.status)
	print(await resp.text())
	loop = asyncio.get_event_loop()
	tasks = [aiohttp_01("https://api.github.com/events")]
	loop.run_until_complete(asyncio.wait(tasks))
	loop.close()
	# 其他Http方法
	# 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')
	# 自定义Headers
	# payload = {'some': 'data'}
	# headers = {'content-type': 'application/json'}
	# await session.post(url, data=json.dumps(payload), headers=headers)
	# 自定义Cookie
	# cookies = {'cookies_are': 'working'}
	# async with ClientSession(cookies=cookies) as session:
	# 访问Cookie: session.cookie_jar
	# 在URLs中传递参数
	# 1. params = {'key1': 'value1', 'key2': 'value2'}
	# 2. params = [('key', 'value1'), ('key', 'value2')]
	# async with session.get('http://httpbin.org/get', params=params) as resp:
	# assert resp.url == 'http://httpbin.org/get?key2=value2&key1=value1'
	# 发送数据
	# payload = {'key1': 'value1', 'key2': 'value2'}
	# async with session.post('http://httpbin.org/post', data=payload) as resp:
	# async with session.post(url, data=json.dumps(payload)) as resp:
	# print(await resp.text())
	# 发送文件(1)
	# files = {'file': open('report.xls', 'rb')}
	# await session.post(url, data=files)
	# 发送数据(2)
	# data = FormData()
	# data.add_field('file',
	# open('report.xls', 'rb'),
	# filename='report.xls',
	# content_type='application/vnd.ms-excel')
	# await session.post(url, data=data)
	# 超时设置
	# aync with session.get('https://github.com', timeout=60) as r:
	# 代理支持
	# async with aiohttp.ClientSession() as session:
	# async with session.get("http://python.org", proxy="http://some.proxy.com") as resp:
	# print(resp.status)
	# async with aiohttp.ClientSession() as session:
	# proxy_auth = aiohttp.BasicAuth('user', 'pass')
	# async with session.get("http://python.org", proxy="http://some.proxy.com", proxy_auth=proxy_auth) as resp:
	# print(resp.status)
	# session.get("http://python.org", proxy="http://user:pass@some.proxy.com")
	# 返回的内容
	# async with session.get('https://api.github.com/events') as resp:
	# print(await resp.text())
	# print(await resp.text(encoding='gbk'))
	# print(await resp.read())
	# print(await resp.json())
	# 返回内容较大
	# with open(filename, 'wb') as fd:
	# while True:
	# chunk = await resp.content.read(chunk_size)
	# if not chunk:
	# break
	# fd.write(chunk)
	# 返回的其他变量
	# async with session.get('http://httpbin.org/get') as resp:
	# print(resp.status) # 状态码
	# print(resp.headers) # Headers
	# print(resp.raw_headers) # 原始Headers
	# print(resp.cookies) # 返回的Cookie
	# 访问历史History
	# resp = await session.get('http://example.com/some/redirect/')
	# resp: <ClientResponse(http://example.com/some/other/url/) [200]>
	# resp.history: (<ClientResponse(http://example.com/some/redirect/) [301]>,)
	# 释放返回的Response
	# 1. async with session.get(url) as resp: pass
	# 2. await resp.release()
	# 连接器: Connectors
	# conn = aiohttp.TCPConnector()
	# session = aiohttp.ClientSession(connector=conn)
	# 限制连接池大小:
	# conn = aiohttp.TCPConnector(limit=30)
	# conn = aiohttp.TCPConnector(limit=None)