micropython.org

MicroPython is a lean and efficient implementation of the Python 3 programming language that includes a small subset of the Python standard library and is optimised to run on microcontrollers and in constrained environments.
目前已经有两个版本可以下载了。
esp8266-2016-07-15-v1.8.2-14-g780114e.bin (latest)
esp8266-2016-07-13-v1.8.2-11-gbe313ea.bin