python请求异常-不断抛出错误

Question

收到HTTP 200时，脚本运行正常。但是，一旦出现异常，我就会收到错误消息。我知道该网站未安装有效的SSL证书，并且我尝试过request.exceptions.RequestException来捕获任何内容，但仍会引发错误。我还会不时出现诸如代理错误之类的异常，而requests.exceptions.RequestException不会捕获该异常。我也尝试过在try下：request.raise_for_status（），但仍然抛出错误。代码如下：def verify_ssl(proxy_info, target):    print('Attempting to verify SSL Cert on %s:443' % target)   if proxy_info == None:      response = requests.get('https://%s' % target)   if proxy_info != None:      response = requests.get('https://%s' % target, proxies=proxy_info)   try:      response   except requests.exceptions.SSLError as g:      print('SSL Verification Error %s' % g)   return ('Successfully Verified SSL Cert: HTTP 200 received.\n')调试给我这个：    Traceback (most recent call last):  File "c:\Users\appleta\Desktop\ping.py", line 69, in <module>    ssl_result = verify_ssl(proxy_info, target)  File "c:\Users\appleta\Desktop\ping.py", line 37, in verify_ssl    response = requests.get('https://%s' % target)  File "C:\Python34\lib\site-packages\requests\api.py", line 72, in get    return request('get', url, params=params, **kwargs)  File "C:\Python34\lib\site-packages\requests\api.py", line 58, in request    return session.request(method=method, url=url, **kwargs)  File "C:\Python34\lib\site-packages\requests\sessions.py", line 512, in request    resp = self.send(prep, **send_kwargs)  File "C:\Python34\lib\site-packages\requests\sessions.py", line 622, in send    r = adapter.send(request, **kwargs)  File "C:\Python34\lib\site-packages\requests\adapters.py", line 511, in send    raise SSLError(e, request=request)requests.exceptions.SSLError: HTTPSConnectionPool(host='blabla.com', port=443): Max retries exceeded with url: / (Caused by SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:600)'),))

Answer 1

在python中的表达式：

response

可从来没有产生异常。您必须将两个get调用都放在try块中：

def verify_ssl(proxy_info, target): 

   print('Attempting to verify SSL Cert on %s:443' % target)

   try:

       if proxy_info is None:

          response = requests.get('https://%s' % target)

       else:

          response = requests.get('https://%s' % target, proxies=proxy_info)

   except requests.exceptions.SSLError as g:

      print('SSL Verification Error %s' % g)

      return 'Got SSL error'

   return 'Successfully Verified SSL Cert: HTTP 200 received.\n'

另外：请注意，您总是返回字符串，Successfully Verified SSL Cert ...因为即使发生错误，您也只打印错误消息，然后恢复执行。您可能想在except块中返回不同的内容。