小编Fid*_*han的帖子

每次我在 mac os 上运行“jupyter notebook”时，为什么总是出现这个错误？

案件：

1. 我有 python2.x 并且我安装了 python3.7（所以，我在这里有两个命令）
2. 我用 pip 安装了 jupyter
3. 当我输入 jupyter notebook 命令时，我总是收到这些错误

错误：

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.7/bin/jupyter-notebook", line 11, in <module>
  sys.exit(main())
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/jupyter_core/application.py", line 266, in launch_instance
  return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/traitlets/config/application.py", line 658, in launch_instance
  app.start()
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/notebook/notebookapp.py", line 1697, in start
  browser = webbrowser.get(self.browser or None)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/webbrowser.py", line 42, in get
  register_standard_browsers()
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/webbrowser.py", line 531, in register_standard_browsers
  raw_result = subprocess.check_output(cmd, stderr=subprocess.DEVNULL)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 376, …