python 中的 requests.get 给出连接超时错误

Question

语言版本：Python 3.6.3
IDE 版本：PyCharm 2017.2.3

我试图解析一个天气网站来打印某个地方的天气。当我学习Python时，之前我使用过urllib.request.urlopen(url).read()并且它有效。现在，我正在修改BeautifulSoup4和requests模块的代码。下面是我的代码：

from bs4 import *
import requests
url = "https://www.accuweather.com/en/in/dhenkanal/189844/weather-forecast/189844"
data = requests.get(url)
soup = BeautifulSoup(data.text, "html.parser")
print(soup.find('div', {'class': 'info'}))

但每次我尝试运行代码时都会出现以下错误：

Traceback (most recent call last):
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\urllib3\connectionpool.py", line 601, in urlopen
chunked=chunked)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\urllib3\connectionpool.py", line 387, in _make_request
six.raise_from(e, None)
File "", line 2, in raise_from
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\urllib3\connectionpool.py", line 383, in _make_request
httplib_response = conn.getresponse()
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\http\client.py", line 1331, in getresponse
response.begin()
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\http\client.py", line 297, in begin
version, status, reason = self._read_status()
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\http\client.py", line 258, in _read_status
line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\socket.py", line 586, in readinto
return self._sock.recv_into(b)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\ssl.py", line 1009, in recv_into
return self.read(nbytes, buffer)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\ssl.py", line 871, in read
return self._sslobj.read(len, buffer)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\ssl.py", line 631, in read
v = self._sslobj.read(len, buffer)
TimeoutError: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\requests\adapters.py", line 440, in send
timeout=timeout
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\urllib3\connectionpool.py", line 639, in urlopen
_stacktrace=sys.exc_info()[2])
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\urllib3\util\retry.py", line 357, in increment
raise six.reraise(type(error), error, _stacktrace)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\urllib3\packages\six.py", line 685, in reraise
raise value.with_traceback(tb)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\urllib3\connectionpool.py", line 601, in urlopen
chunked=chunked)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\urllib3\connectionpool.py", line 387, in _make_request
six.raise_from(e, None)
File "", line 2, in raise_from
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\urllib3\connectionpool.py", line 383, in _make_request
httplib_response = conn.getresponse()
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\http\client.py", line 1331, in getresponse
response.begin()
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\http\client.py", line 297, in begin
version, status, reason = self._read_status()
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\http\client.py", line 258, in _read_status
line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\socket.py", line 586, in readinto
return self._sock.recv_into(b)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\ssl.py", line 1009, in recv_into
return self.read(nbytes, buffer)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\ssl.py", line 871, in read
return self._sslobj.read(len, buffer)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\ssl.py", line 631, in read
v = self._sslobj.read(len, buffer)
urllib3.exceptions.ProtocolError: ('Connection aborted.', TimeoutError(10060, 'A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond', None, 10060, None))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "E:/Projects/Python/Practice/Practice1.py", line 5, in 
data = requests.get(url)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\requests\api.py", line 72, in get
return request('get', url, params=params, **kwargs)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\requests\api.py", line 58, in request
return session.request(method=method, url=url, **kwargs)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\requests\sessions.py", line 508, in request
resp = self.send(prep, **send_kwargs)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\requests\sessions.py", line 618, in send
r = adapter.send(request, **kwargs)
File "C:\Users\Nrusingh\AppData\Local\Programs\Python\Python36-32\lib\site-packages\requests\adapters.py", line 490, in send
raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', TimeoutError(10060, 'A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond', None, 10060, None))

Process finished with exit code 1  

这是什么错误以及如何纠正它？为什么它在 urllib 中有效，但在 requests 中不起作用？

Answer 1

我直接使用了您的代码，遇到了同样的错误，然后我按照浏览器中发送请求的方式进行操作。如果预期标头未与用作后端处理一部分的请求一起发送，某些服务器不会响应。事实证明，服务器正在寻找一个名为“user-agent通常用于确定请求来自哪个客户端”的标头。现在，修改后的代码可以正常工作！

from bs4 import *
import requests
url = "https://www.accuweather.com/en/in/dhenkanal/189844/weather-forecast/189844"

headers = {'user-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36'}

data = requests.get(url, headers=headers)
soup = BeautifulSoup(data.text, "html.parser")

现在你可以玩你的汤了！事实上，您可以传递更多标头，例如accept, dnt, pragma, accept-language, cache-control等。这些 http 标头的解释是另一个问题，下次再讨论。希望能帮助到你 ：）