exercism/python is the repository for Exercism's Python learning track. It contains programming training material where you write Python concepts and exercises as code yourself and check the results with tests. The exercises are organized in a form that serves both developers who are actively working and learners. This repository does not have any release versions catalogued.
The README describes this track as one of the programming language tracks on exercism.org. The exercises it contains fall into two branches. One is the concept exercise (concept exercise) for learning the concepts taught by the Python syllabus, and the other is the practice exercise (practice exercise), whose locks open as you progress through the syllabus, letting you repeat the concepts you have learned and try new techniques. A syllabus means a learning sequence listing the concepts you should master. The repository was released under the MIT License, was created on February 28, 2014, and currently has 2524 stars.
What is included here, however, is only exercises for learning and their tests. Since the README explains only the structure of the track, it does not state what criteria were used to evaluate the difficulty of the problems or the learning effect. Nor does it provide libraries or tools ready to use directly in a real service. The MIT License keeps the terms of use relatively light, but as a collection of Python exercises it is worth taking a look at.