༄  jupyter notebook --generate-config
Writing default config to: /Users/zoomq/.jupyter/jupyter_notebook_config.py

༄  ipython
Python 3.6.1 (default, Apr 16 2017, 22:13:58)
Type 'copyright', 'credits' or 'license' for more information
IPython 6.0.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: from notebook.auth import passwd

In [2]: passwd()
Enter password:
Verify password:
Out[2]: 'sha1:5c8a~~~~~~~~'