response = requests.get錯誤，當URL不可達

-3

我想寫一個腳本，它的一部分必須檢查URL是否可用。問題是，當我得到回覆200,404等，該程序工作正常，我可以處理的答覆，但是當URL無法訪問，程序進入下面的錯誤。這是部分代碼：response = requests.get錯誤，當URL不可達

response = requests.get(url) 
print (response)

錯誤：

Traceback (most recent call last): 
    File "C:\Python\lib\site-packages\requests\packages\urllib3\connection.py", line 141, in _new_conn 
    (self.host, self.port), self.timeout, **extra_kw) 
    File "C:\Python\lib\site-packages\requests\packages\urllib3\util\connection.py", line 60, in create_connection 
    for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM): 
    File "C:\Python\lib\socket.py", line 743, in getaddrinfo 
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags): 
socket.gaierror: [Errno 11001] getaddrinfo failed 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "C:\Python\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 600, in urlopen 
    chunked=chunked) 
    File "C:\Python\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 345, in _make_request 
    self._validate_conn(conn) 
    File "C:\Python\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 844, in _validate_conn 
    conn.connect() 
    File "C:\Python\lib\site-packages\requests\packages\urllib3\connection.py", line 284, in connect 
    conn = self._new_conn() 
    File "C:\Python\lib\site-packages\requests\packages\urllib3\connection.py", line 150, in _new_conn 
    self, "Failed to establish a new connection: %s" % e) 
requests.packages.urllib3.exceptions.NewConnectionError: <requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x03EC9970>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed

是否有解決方法嗎？如果我可以將腳本設置爲打印URL不可用的行，並且存在將會很好。

來源

2017-04-22 Patz

所以剛纔[捕獲異常（HTTPS：/ /docs.python.org/3/tutorial/errors.html#handling-exceptions）？請參閱[*錯誤和例外*部分]（http://docs.python-requests.org/en/master/user/quickstart/#errors-and-exceptions）。你有沒有嘗試過這個，你有沒有遇到問題要找到什麼異常？ –

你有沒有考慮捕捉和處理異常？ – mhawke

只是catch the exception。在requests文件的Errors and Exceptions section表明你應該能夠趕上requests.ConnectionError exception這裏：

try: 
    response = requests.get(url) 
except requests.ConnectionError: 
    print("Can't connect to the site, sorry") 
else: 
    print(response)

快速演示了不存在的主機名：

>>> import requests 
>>> try: 
...  response = requests.get("http://no_such_site_exists.imsure") 
... except requests.ConnectionError: 
...  print("Can't connect to the site, sorry") 
... else: 
...  print(response) 
... 
Can't connect to the site, sorry

來源

2017-04-22 12:06:31

response = requests.get錯誤，當URL不可達

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