update README.md

Add .gitignore for Python cache files

Fix analysis logic and unit tests (UTF-8, imports, CI compatible)

Final project: code, tests passed, README, CI/CD workflow

update tests/test_analysis.py

update src/analysis.py

Initial commit: project structure, code, tests, README, CI/CD workflow

delete scripts/PANDAS_CHEATSHEET.md

delete scripts/MATPLOTLIB_CHEATSHEET.md

delete scripts/CODE_REQUIREMENTS.md

delete scripts/ASSIGNMENTS_README.md

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

update README.md

update README.md

create README.md

create demo/artifacts.md

update README.md

update README.md