Python is a very powerful, concise and flexible language used everywhere, from embedded systems to desktop and web applications.
My knowledge of Python is pretty powerful, too.
Below are some projects I've developed.
Lightweight and modular ETL application that uses data flow definitions in JSON format.
More info Source code
Information screen web application for Raspberry Pi.
Application indicator for controlling Docker containers in Ubuntu Linux.
Sound input/output switcher application for Ubuntu Linux. One of my most popular open-source projects, which has gained 100 (and counting) on GitHub.