Python 網路連線、公開資料串接 下載特定網址資料異常處理

# 載入模組 import urllib.request as request # 指定網址 src = "https://python.org/" # 開啟網址資料 request.urlopen(src) 執行異常訊息： Traceback (most recent call last):   File "...PythonPython39liburllib equest.py", line 1346, in do_open     h.request(req.get_method(), req.selector, req.data, headers,   File "...PythonPython39libhttpclient.py", line 1253, in request     self._send_request(method, url, body, headers, encode_chunked)   File "...PythonPython39libhttpclient.py", line 1299, in _send_request     self.endheaders(body, encode_chunked=encode_chunked)   File "...PythonPython39libhttpclient.py", line 1248, in endheaders     self._send_output(message_body, encode_chunked=encode_chunked)   File "...PythonPython39libhttpclient.py", line 1008, in _send_output     self.send(msg)   File "...PythonPython39libhttpclient.py", line 948, in send     self.connect()   File "...PythonPython39libhttpclient.py", line 1422, in connect     self.sock = self._context.wrap_socket(self.sock,   File "...PythonPython39libssl.py", line 500, in wrap_socket     return self.sslsocket_class._create(   File "...PythonPython39libssl.py", line 1040, in _create     self.do_handshake()   File "...PythonPython39libssl.py", line 1309, in do_handshake     self._sslobj.do_handshake() ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1129) During handling of the above exception, another exception occurred: Traceback (most recent call last):   File "... et_data.py", line 9, in <module>     request.urlopen(src)   File "...PythonPython39liburllib equest.py", line 214, in urlopen     return opener.open(url, data, timeout)   File "...PythonPython39liburllib equest.py", line 517, in open     response = self._open(req, data)   File "...PythonPython39liburllib equest.py", line 534, in _open     result = self._call_chain(self.handle_open, protocol, protocol +   File "...PythonPython39liburllib equest.py", line 494, in _call_chain     result = func(*args)   File "...PythonPython39liburllib equest.py", line 1389, in https_open     return self.do_open(http.client.HTTPSConnection, req,   File "...PythonPython39liburllib equest.py", line 1349, in do_open     raise URLError(err) urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1129)>

搜尋異常狀態

# 載入模組 import urllib.request as request # 指定網址 src = "https://python.org/" # 開啟網址資料 #request.urlopen(src) from urllib.error import HTTPError, URLError try:     request.urlopen(src)     print("urlopen OK") except HTTPError as e:     print("HTTP code error: ", e.reason) except URLError as error:     print("URLError code error: ", error.reason) 顯示執行異常訊息： URLError code error:  [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1129) 問題發生原因： 驗證 SSL 憑證異常。

修改說明：選擇不用認證此 SSL 憑證

# 載入模組 import urllib.request as request import ssl from urllib.error import HTTPError, URLError # 指定網址 src = "https://python.org/" # 取消 SSL 憑證 認證 ssl._create_default_https_context = ssl._create_unverified_context # 開啟網址資料 try:     request.urlopen(src)     print("urlopen OK") except HTTPError as e:     print("HTTP code error: ", e.reason) except URLError as error:     print("URLError code error: ", error.reason) 顯示正確執行訊息： urlopen OK