CircuitPython is an open-source derivative of the MicroPython programming language targeted toward students and beginners. Development of CircuitPython is supported by Adafruit Industries. It is a software implementation of the Python 3 programming language, written in C. It has been ported to run on several modern microcontrollers.
CircuitPython consists of a Python compiler to bytecode and a runtime interpreter of that bytecode that runs on the microcontroller hardware. The user is presented with an interactive prompt (the REPL) to execute supported commands immediately. Included are a selection of core Python libraries. CircuitPython includes modules which give the programmer access to the low-level hardware of supported products as well as higher-level libraries for beginners.
CircuitPython is a fork of MicroPython, originally created by Damien George. The MicroPython community continues to discuss forks of MicroPython into variants such as CircuitPython.
CircuitPython is targeted to be compatible with CPython, the reference implementation of the Python programming language. Programs written for CircuitPython-compatible boards may not run unmodified on other platforms such as the Raspberry Pi.