Suppose you want to import the contents of A.ipynb into B.ipynb.

pip install import-ipynb

Place both ipynb files in the same directory. Then, in the B.ipynb:

import import_ipynb
import A

Congratulations! You can now run any functions defined in A.ipynb from B.ipynb!

The code within import_ipynb.py defines a "notebook loader" that allows you to 'import' other ipynb files into your current ipynb file. This entails:

1. load the notebook document into memory
2. create an empty Module
3. execute every cell in the Module namespace

Note that since every cell in the A.ipynb is executed when you import the the file, A.ipynb should only contain classes and function definitions (otherwise you'll end up loading all variables and data into memory).

The code within imoprt_ipynb.py comes from http://jupyter-notebook.readthedocs.io/en/latest/examples/Notebook/Importing Notebooks.html.

Riley F. Edmunds (@rileyedmunds) wrote instructions on how to use it and Lev Maximov (@axil) packaged it.