请求中的URL超过了最大重试次数

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

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。

2019-08-22 22:07:08

其他回答

只需使用请求功能:

import requests
from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry


session = requests.Session()
retry = Retry(connect=3, backoff_factor=0.5)
adapter = HTTPAdapter(max_retries=retry)
session.mount('http://', adapter)
session.mount('https://', adapter)

session.get(url)

这将获取URL并重试3次，以防出现requests.exceptions.ConnectionError。Backoff_factor将有助于在尝试之间应用延迟，以避免在定期请求配额的情况下再次失败。

看一下urllib3.util.retry。重试，它有许多选项来简化重试。

2017-11-24 14:10:38

我正在用Gauge编写一个测试，我也遇到了这个错误，这是因为我试图在没有激活VPN的情况下请求内部URL。

2022-04-20 08:13:32

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)

2020-07-01 06:18:12

PIP install pyopenssl似乎为我解决了这个问题。

https://github.com/requests/requests/issues/4246

2017-10-31 15:35:29

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。

2019-08-22 22:07:08

请求中的URL超过了最大重试次数

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