To try out the  Python code used to generate the figures included in this guide, click on the </> Code button to the left of a figure to reveal the corresponding .ipynb Jupyter notebook and associated data files. Clicking on the notebook file name  will launch the notebook within a Jupyter web server hosted by Authorea. The notebook can then be run as usual. As with a Mathematica style notebook, clicking on a 'cell' and hitting SHIFT-ENTER will execute the cell and advance to the next one.  Alternatively, make modifications to the notebook (for example, adjust a smoothing parameter) then Select Run All from the Cell Menu or Restart & Run All from the Kernel Menu.  For additional help, see the  online interactive  tutorial on how to run Python inside Jupyter (formerly iPython) notebooks. 
Navigation Tip: For a handy table of contents, select Table of Contents from the Document ▾ pull down menu (upper left of this page).  Clicking on an item in the table of contents will take you to that section.