All your files will be interpreted/compiled on Ubuntu 18.04 LTS using python3 (version 3.7) All your files should end with a new line The first line of all your files should be exactly #!/usr/bin/env python3 A README.md file, at the root of the folder of the project, is mandatory Your code should use the pycodestyle style (version 2.5.*) The length of your files will be tested using wc All your modules should have a documentation (python3 -c 'print(import("my_module").doc)') All your functions should have a documentation (python3 -c 'print(import("my_module").my_function.doc)' A documentation is not a simple word, it’s a real sentence explaining what’s the purpose of the module, class or method (the length of it will be verified) All your functions and coroutines must be type-annotated.