我试图获得应用商店>业务的内容:

import requests
from lxml import html

page = requests.get("https://itunes.apple.com/in/genre/ios-business/id6000?mt=8")
tree = html.fromstring(page.text)

flist = []
plist = []
for i in range(0, 100):
    app = tree.xpath("//div[@class='column first']/ul/li/a/@href")
    ap = app[0]
    page1 = requests.get(ap)

当我尝试(0,2)的范围,它工作,但当我把范围在100,它显示这个错误:

Traceback (most recent call last):
  File "/home/preetham/Desktop/eg.py", line 17, in <module>
    page1 = requests.get(ap)
  File "/usr/local/lib/python2.7/dist-packages/requests/api.py", line 55, in get
    return request('get', url, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests/api.py", line 44, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 383, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 486, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests/adapters.py", line 378, in send
    raise ConnectionError(e)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='itunes.apple.com', port=443): Max retries exceeded with url: /in/app/adobe-reader/id469337564?mt=8 (Caused by <class 'socket.gaierror'>: [Errno -2] Name or service not known)

当前回答

当我在浏览器中运行路线时,我有同样的错误,但在邮差中,它工作得很好。我的问题是,在查询字符串之前的路由之后没有/。

127.0.0.1:5000 / api / v1 /搜索/ ?location=Madina提出错误,并在搜索对我有效后删除/。

其他回答

检查网络连接。我有这个,虚拟机没有一个正确的网络连接。

加上我自己的经验:

r = requests.get(download_url)

当我试图下载url中指定的文件时。

错误在于

HTTPSConnectionPool(host, port=443): Max retries exceeded with url (Caused by SSLError(SSLError("bad handshake: Error([('SSL routines', 'tls_process_server_certificate', 'certificate verify failed')])")))

我通过在函数中添加verify = False来纠正它,如下所示:

r = requests.get(download_url + filename)
open(filename, 'wb').write(r.content)

在公司环境中指定代理为我解决了这个问题。

page = requests.get("http://www.google.com:80", proxies={"http": "http://111.233.225.166:1234"})

完整的错误是:

requests.exceptions.ConnectionError: httpconnectionpool (host='www.google.com', port=80): Max retries exceeded with url: /(由NewConnectionError(': Failed to establish a new connection: [WinError 10060]连接尝试失败,因为被连接的一方在一段时间后没有正确响应,或已建立的连接失败,因为连接的主机未能响应'))

即使在安装pyopenssl和尝试各种python版本后,我也无法在Windows上工作(而它在mac上工作得很好),所以我切换到urllib,它可以在python 3.6(从python .org)和3.7 (anaconda)上工作

import urllib 
from urllib.request import urlopen
html = urlopen("http://pythonscraping.com/pages/page1.html")
contents = html.read()
print(contents)

补充我自己的经验,为那些在未来正在经历这种情况的人。我的具体错误是

Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known'

事实证明,这实际上是因为我已经达到了系统上打开的文件的最大数量。它与失败的连接无关,甚至与所指出的DNS错误无关。