Python does not offer all the functionalities in one module, you need to look for them sometimes. In my case, I was looking for a statistical test on coefficients obtained with a linear regression. The module I was looking for is statmodels. While looking for that, I found this interesting blog Glowing Python. But I finally decided to switch to R where I know for sure I would find what I need. And because I'm not fluent in R, I need something like that : StatMethods.