This is updated code for estimating story point with porru method. Tested in Python 3.7.4.
- Porru, Simone & Murgia, Alessandro & Demeyer, Serge & Marchesi, Michele & Tonelli, Roberto. (2016). Estimating Story Points from Issue Reports. 1-10. 10.1145/2972958.2972959.
- https://github.com/morakotch/storypoint_ds