Install the python. This will also build the TS package. If you use JupyterLab to develop then you can watch the source directory and run JupyterLab at the same time in different terminals to watch ...

For example take this code snippet and save it to a cell of a *.ipynb notebook. The call to ipython should fail. If it is not aborted at the time when the exception is raised, at least it should exit ...