Запрос на слияние 'review' (#1) из review в master

update assignment.py

update assignment.py

update assignment.py

update README.md

update assignment.py

update assignment.py

update assignment.py

update README.md

delete CONTRIBUTING.md

delete FILE_UPDATE_REPORT.md

create README

upload files

update assignment.py

update python_hard.py

update python_medium.py

update REPORT.md

update python_hard.py