Notebook utilities

Here are some utilities that help manage .ipynb files.

• nbcat : concatenate multiple notebook files
• nbstrip : strips the output of code cells, writes to stdout or --in-place
• nbrun : runs a notebook, and saves results back into it.
• nbsimplecheck : runs a notebook and reports exceptions.

Parametrized notebooks

nbexplode : takes a notebook where the first cell looks something like this:

## Parameters
x = [ 1, 5, 10, 20 ]
y = 'I love python'.split()

and creates 12 notebooks, with the first cell replaced by all combinations of members of x and y, for example, the first notebook that will get exploded will have this as it's first cell:

## Parameterized by sample.ipynb
x = 1
y = 'I'

and the last exploded notebook will have its first cell be:

## Parameterized by sample.ipynb
x = 20
y = 'python'

By default, the output of this command is just the filenames of the created notebooks, this way you can do something like this:

nbexplode params.ipynb | xargs -n1 -P4 nbrun

In this example, we used xargs to run a bunch of notebooks at the same time.