Question

我注意到请求无效的网址requests.get(invalid_url)会引发以下异常：

Traceback (most recent call last):
  File "/usr/lib/python3.4/socket.py", line 530, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 607, in urlopen
    raise MaxRetryError(self, url, e)
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='sparkandshine.me', port=80): Max retries exceeded with url: / (Caused by <class 'socket.gaierror'>: [Errno -2] Name or service not known)

During handling of the above exception, another exception occurred:
  File "/usr/lib/python3/dist-packages/requests/adapters.py", line 378, in send
    raise ConnectionError(e)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='sparkandshine.me', port=80): Max retries exceeded with url: / (Caused by <class 'socket.gaierror'>: [Errno -2] Name or service not known)

通过捕获这些例外来确定域名是否已注册是否准确？以下是源代码：

#!/usr/bin/env python3
import http
import urllib3
import requests

url = 'http://example.com'
try :
    r = requests.get(url)
except (http.client.HTTPException, urllib3.exceptions.MaxRetryError, requests.exceptions.ConnectionError):
    print(url) #this domain name is not registered?

Answer 1

没有;域名注册并且没有根域名的IP地址是完全没问题的，更不用说在该IP地址的端口80上运行服务器了。

Answer 2

如@tripleee所述，它不是很精确。我找到另一种方法来确定域名是否已注册，使用python模块pywhois。

要安装它，

viewModel

这是一个例子。

pip install python-whois

PS：不支持python3。

使用`requests`检查域名是否已注册是否准确？

2 个答案: