问PyCharm arcpy导入时Python套接字服务器错误-我还没有设置什么？

EN

>>    import arcpy - will work
but typing
>>    arcpy. - will instantly generate 


Traceback (most recent call last):

  File "C:\Python27\ArcGIS10.3\lib\SocketServer.py", line 295, in _handle_request_noblock
Exception happened during processing of request from ('127.0.0.1', 59487)
    self.process_request(request, client_address)
  File "C:\Python27\ArcGIS10.3\lib\SocketServer.py", line 321, in process_request
    self.finish_request(request, client_address)
  File "C:\Python27\ArcGIS10.3\lib\SocketServer.py", line 334, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "C:\Python27\ArcGIS10.3\lib\SocketServer.py", line 653, in __init__
    self.finish()
  File "C:\Python27\ArcGIS10.3\lib\SocketServer.py", line 712, in finish
    self.wfile.close()
  File "C:\Python27\ArcGIS10.3\lib\socket.py", line 279, in close
    self.flush()
  File "C:\Python27\ArcGIS10.3\lib\socket.py", line 303, in flush
    self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 10053] An established connection was aborted by the software in your host machine

>>import arcpy
>>fullpath = r'C:\Temp\some.mxd'    # where this is a valid ESRI map doc
>> my_mapdoc_object = arcpy.mapping.MapDocument(fullpath)