Jupyter as an alternative engine for Pexpect

**Describe the solution you'd like**
[https://jupyter.org/](Jupyter) allows the execution of code in different languages to support interactive documentation. The same engine could be used to *validate* the documentation.

Instead of implementing an adapter with ``pexpect`` for each language interperter, we could use ``Jupyter`` directly.

It is a long just, but it worths the try.