jupyter 远程访问配置：KeyError: 'allow_remote_access'

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我今天在配置服务器的jupyter notebook的时候遇见了下面的错误

(安装jupyter的教程参考：https://blog.csdn.net/simple_the_best/article/details/77005400)：

Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/traitlets/traitlets.py", line 528, in get
    value = obj._trait_values[self.name]
KeyError: 'allow_remote_access'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/notebook/notebookapp.py", line 869, in _default_allow_remote
    addr = ipaddress.ip_address(self.ip)
  File "/usr/lib/python3.5/ipaddress.py", line 54, in ip_address
    address)
ValueError: '' does not appear to be an IPv4 or IPv6 address

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/jupyter-notebook", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.5/dist-packages/jupyter_core/application.py", line 266, in launch_instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "/usr/local/lib/python3.5/dist-packages/traitlets/config/application.py", line 657, in launch_instance
    app.initialize(argv)
  File "<decorator-gen-7>", line 2, in initialize
  File "/usr/local/lib/python3.5/dist-packages/traitlets/config/application.py", line 87, in catch_config_error
    return method(app, *args, **kwargs)
  File "/usr/local/lib/python3.5/dist-packages/notebook/notebookapp.py", line 1629, in initialize
    self.init_webapp()
  File "/usr/local/lib/python3.5/dist-packages/notebook/notebookapp.py", line 1379, in init_webapp
    self.jinja_environment_options,
  File "/usr/local/lib/python3.5/dist-packages/notebook/notebookapp.py", line 158, in __init__
    default_url, settings_overrides, jinja_env_options)
  File "/usr/local/lib/python3.5/dist-packages/notebook/notebookapp.py", line 251, in init_settings
    allow_remote_access=jupyter_app.allow_remote_access,
  File "/usr/local/lib/python3.5/dist-packages/traitlets/traitlets.py", line 556, in __get__
    return self.get(obj, cls)
  File "/usr/local/lib/python3.5/dist-packages/traitlets/traitlets.py", line 535, in get
    value = self._validate(obj, dynamic_default())
  File "/usr/local/lib/python3.5/dist-packages/notebook/notebookapp.py", line 872, in _default_allow_remote

jupyter都是常规方法配置的，后面发现在配置jupyter_notebook_config.py的时候少加了下面的东西，于是输入

vim ~/.jupyter/jupyter_notebook_config.py  //ubuntu 16.04

添加如下代码行：

c.NotebookApp.allow_remote_access = True

然后这样就可以正常启动了

参考文献

[1].Error while trying to open Jupyter notebook in Paperspace. http://forums.fast.ai/t/error-while-trying-to-open-jupyter-notebook-in-paperspace/22634