在Mac终端上突然启动jupyter笔记本的问题。它工作正常

Question

最后一次登录：ttys000上3月16日星期六11:57:39

export PATH="/usr/local/opt/jpeg-turbo/bin:$PATH"
MyLap-MBP:~ hello$ /anaconda2/bin/jupyter_mac.command ; exit;
Traceback (most recent call last):
  File "/anaconda2/bin/jupyter-notebook", line 7, in <module>
    from notebook.notebookapp import main
  File "/anaconda2/lib/python2.7/site-packages/notebook/notebookapp.py", line 62, in <module>
    from tornado import httpserver
  File "/anaconda2/lib/python2.7/site-packages/tornado/httpserver.py", line 33, in <module>
    from tornado.http1connection import HTTP1ServerConnection, HTTP1ConnectionParameters
  File "/anaconda2/lib/python2.7/site-packages/tornado/http1connection.py", line 30, in <module>
    from tornado import iostream
  File "/anaconda2/lib/python2.7/site-packages/tornado/iostream.py", line 40, in <module>
    from tornado.netutil import ssl_wrap_socket, _client_ssl_defaults, _server_ssl_defaults
  File "/anaconda2/lib/python2.7/site-packages/tornado/netutil.py", line 44, in <module>
    _client_ssl_defaults = ssl.create_default_context(
AttributeError: 'module' object has no attribute 'create_default_context'
logout
Saving session...completed.

[Process completed]