signalrcore client doesn't work with Python2.7 about signalrcore HOT 3 CLOSED

C:\project\websocket>py -2 -m pip list
..
..
Package                       Version
----------------------------- ---------
..
..
signalrcore                   0.7.0
..
..

C:\project\websocket>py -2
Python 2.7.14 (v2.7.14:84471935ed, Sep 16 2017, 20:25:58) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
>>>
>>> from signalrcore.hub_connection_builder import HubConnectionBuilder
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python27\lib\site-packages\signalrcore\hub_connection_builder.py", line 4, in <module>
    from .hub.auth_hub_connection import AuthHubConnection
  File "C:\Python27\lib\site-packages\signalrcore\hub\auth_hub_connection.py", line 4, in <module>
    from .errors import UnAuthorizedHubError, HubError
  File "C:\Python27\lib\site-packages\signalrcore\hub\errors.py", line 1, in <module>
    class HubError(ConnectionError):
NameError: name 'ConnectionError' is not defined
>>>

from urllib import parse

C:\Python27>py -2
Python 2.7.14 (v2.7.14:84471935ed, Sep 16 2017, 20:25:58) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
>>> from urllib import parse
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name parse
>>>

C:\Python27>py -2
Python 2.7.14 (v2.7.14:84471935ed, Sep 16 2017, 20:25:58) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
>>> import urlparse as parse
>>>