Запрос на слияние 'branch' (#2) из branch в master

update assignment.py

update assignment.py

update assignment.py

update assignment.py

update assignment.py

update assignment.py

update assignment.py

update README.md

upload visualition files

delete FILE_UPDATE_REPORT.md

delete CONTRIBUTING.md

update README.md

update assignment.py

create requirements.txt

update assignment.py

update test.py