This web applications shows off building a graphical user interface with Python's Flask and WTForms packages. It retrieves inputs from the user, call's a Python function to calculate the x,y points for a spirograph, and uses the Plotly.js JavaScript interface to visualize the data. This application also uses Bootstrap (getbootstrap.com) to help with layout, MathJax (mathjax.org) for rendering the spirograph formula, jQuery for client side JavaScript stuff.

Researchers should cite this work as follows:

• Derrick Kearney (2017), "Spirograph in Python Flask," https://help.hubzero.org/resources/spiroflask1.

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