He wrote about the critical C projects (all calculations are done only for Github based projects), so I decided to look at the list of the Python projects.
It is a score between 0 (least critical) and 1 (most critical), and the algorithm and details are explained in the repository.
The list of top 10 Python projects in their resultset
It is interesting to see that the CPython is at number 8 in the list and the top two projects are configuration management systems.
You can see all the different language details here.