Jupyter notebook nbextension to run checkPy on the current notebook.

This adds a button "checkPy" to the toolbar. When pressed, it launches checkPy by executing !checkpy through the active Jupyter kernel. Output is read from stdout and shown in a modal dialog:

Install via pip:

pip install nbextension-run-checkpy

3-clause BSD License

Based on the nbgrader validate extension. nbgrader: Copyright (c) 2014, Jupyter Development Team.