使用O365库访问Sharepoint网站时出现间歇性代理错误

如何解决使用O365库访问Sharepoint网站时出现间歇性代理错误

我目前正在通过Docker容器中的Airflow Scheduler使用O365库。该库在Airflow Docker容器外对我来说运行良好，但是在Airflow内，我会遇到间歇性的代理错误，尤其是当我同时或彼此之间以非常短的间隔访问API时，例如在顺序或同时运行不同笔记本时。但是，有时如果我将脚本运行空间移开，它确实可以工作。

我正在通过具有Sites.ReadWriteall权限的Azure AD应用程序使用API。

我正在使用O365库的2.0.11版本。

我正在使用“客户凭证”授予类型和“帐户”方法。

from O365 import Account

credentials = ('my_client_id','my_client_secret')

# the default protocol will be Microsoft Graph

account = Account(credentials,auth_flow_type='credentials',tenant_id='my-tenant-id')
if account.authenticate():
   print('Authenticated!')

我的代理服务器应该可以正常工作，因为我仍然偶尔可以访问Sharepoint网站。

我想知道其他人是否曾经遇到过此错误，以及如何解决？

谢谢

这是错误的代码段

ConnectionRefusedError                    Traceback (most recent call last)
/usr/local/lib/python3.7/site-packages/urllib3/connection.py in _new_conn(self)
    159             conn = connection.create_connection(
--> 160                 (self._dns_host,self.port),self.timeout,**extra_kw
    161             )

/usr/local/lib/python3.7/site-packages/urllib3/util/connection.py in create_connection(address,timeout,source_address,socket_options)
     83     if err is not None:
---> 84         raise err
     85 

/usr/local/lib/python3.7/site-packages/urllib3/util/connection.py in create_connection(address,socket_options)
     73                 sock.bind(source_address)
---> 74             sock.connect(sa)
     75             return sock

ConnectionRefusedError: [Errno 111] Connection refused


During handling of the above exception,another exception occurred:

NewConnectionError                        Traceback (most recent call last)
/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py in urlopen(self,method,url,body,headers,retries,redirect,assert_same_host,pool_timeout,release_conn,chunked,body_pos,**response_kw)
    666             if is_new_proxy_conn:
--> 667                 self._prepare_proxy(conn)
    668 

/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py in _prepare_proxy(self,conn)
    931         conn.set_tunnel(self._proxy_host,self.port,self.proxy_headers)
--> 932         conn.connect()
    933 

/usr/local/lib/python3.7/site-packages/urllib3/connection.py in connect(self)
    308         # Add certificate verification
--> 309         conn = self._new_conn()
    310         hostname = self.host

/usr/local/lib/python3.7/site-packages/urllib3/connection.py in _new_conn(self)
    171             raise NewConnectionError(
--> 172                 self,"Failed to establish a new connection: %s" % e
    173             )

NewConnectionError: <urllib3.connection.HTTPSConnection object at >: Failed to establish a new connection: [Errno 111] Connection refused

During handling of the above exception,another exception occurred:

MaxRetryError                             Traceback (most recent call last)
/usr/local/lib/python3.7/site-packages/requests/adapters.py in send(self,request,stream,verify,cert,proxies)
    448                     retries=self.max_retries,--> 449                     timeout=timeout
    450                 )

/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py in urlopen(self,**response_kw)
    766                 body_pos=body_pos,--> 767                 **response_kw
    768             )

/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py in urlopen(self,**response_kw)
    726             retries = retries.increment(
--> 727                 method,error=e,_pool=self,_stacktrace=sys.exc_info()[2]
    728             )

/usr/local/lib/python3.7/site-packages/urllib3/util/retry.py in increment(self,response,error,_pool,_stacktrace)
    438         if new_retry.is_exhausted():
--> 439             raise MaxRetryError(_pool,error or ResponseError(cause))
    440 

MaxRetryError: HTTPSConnectionPool(host='graph.microsoft.com',port=443): Max retries exceeded with url: (Caused by ProxyError('Cannot connect to proxy.',NewConnectionError('<urllib3.connection.HTTPSConnection object at >: Failed to establish a new connection: [Errno 111] Connection refused')))