We have recently started to implement PyCircStat, a python package for statistical analysis of circular or angular data. It builds on the matlab toolbox for circular statistics I have developed a few years ago. The python package is still in the early stages of development, but a number of features are already working:
https://github.com/circstat/PyCircStat
You are welcome to check out the toolbox and try it – let us know if you find bugs, or have feature requests. Thanks!
