While grequests has the ability to make multiple fetch calls (requests) to various urls in parallel, this is still a blocking process. This means that when you call the grequests “map” function, this blocks the execution of your program, until all requests have been completed, and responses...
import ssl import certifi # 使用系统证书库 r = requests.get('https://example.com', verify=True) # 默认 # 使用 certifi 证书库 r = requests.get('https://example.com', verify=certifi.where()) # 使用自定义证书文件 r = requests.get('https://example.com', verify='/path/to/ca-bundle....
importrequestsfromrequests.exceptionsimportTimeout,RequestExceptionfromretryingimportretry# 重试装饰器@retry(stop_max_attempt_number=3,wait_fixed=1000)defmake_request():try:response=requests.get('https://www.example.com',timeout=1)response.raise_for_status()returnresponse.textexceptTimeout:print("Time...
import aiohttpimport asynciofrom bs4 import BeautifulSoupasyncdeffetch_and_parse(url):""" 异步请求URL，获取HTML并用BeautifulSoup解析，提取页面标题。 """asyncwith aiohttp.ClientSession() as session:asyncwith session.get(url) as response: html = await response.text() soup = BeautifulSoup...
[idx + 1] + f"makerandom({idx}) == {i} too low; retrying.") await asyncio.sleep(idx + 1) i = random.randint(0, 10) print(c[idx + 1] + f"---> Finished: makerandom({idx}) == {i}" + c[0]) return iasync def main() : res = await asyncio.gather(*(makerandom(i,...
web.Application( [ (r"/http/tornado/test", TornadoTestHandler), (r"/http/tornado/mysql/test", TornadoMySQLTestHandler), (r"/http/tornado/redis/(.*)", TornadoRedisTestHandler), ] ) app = make_app() async def main(): # init_setup() # app = make_app() server = HTTPServer(app)...
aiohttp可以理解成是和requests对应Python异步网络请求库,它是基于 asyncio 的异步模块,可用于实现异步爬虫,有点就是更快于 requests 的同步爬虫。 安装方式:pip install aiohttp aiohttp是一个为Python提供异步HTTP 客户端/服务端编程,基于asyncio(Python用于支持异步编程的标准库)的异步库。asyncio可以实现单线程并发IO操...
expecting `{Response.__name__}` but getting `{type(handle_response).__name__}`")returnErrorResponse(status_code=HTTPStatus.INTERNAL_SERVER_ERROR)asyncdef__call__(self, scope: AsgiScope, receive: AsgiReceive, send: AsgiSend):# 1. 处理 HTTP 请求ctx = this._make_context(scope, receive,...
requests 是 Python 中最流行的 HTTP 客户端库,通过自定义 Session 对象,可以拦截请求和响应。 示例:拦截请求并修改 Headers python import requests class CustomSession(requests.Session): def request(self, method, url, **kwargs): # 在发送请求前拦截并修改参数 ...
一、Requests:比喝水还简单的 HTTP 请求 刚学爬虫那会儿,我被 urllib 折磨到怀疑人生。直到遇见 Requests——这玩意儿让发请求变得像发微信消息一样简单! python import requests resp = requests.get('https://api.example.com', params={'key':'value'}, timeout=3) ...