Modernisation

Original solution	Modern solution	Why
One `main.py`	Layers in `src/scraping_python_org` (domain, application, infrastructure, presentation)	Business rules do not depend on Selenium; the use case is tested with a fake
Long absolute XPath	CSS selector `.event-widget li`	Short, readable, survives layout changes
Manual counter `c`	`enumerate`	Less code, no off-by-one risk
`detach=True` followed by `driver.quit()`	Headless Chrome in a context manager that always quits	No stray browser windows, runs without a desktop
Unpinned `selenium` in `requirements.txt`	`pyproject.toml` with minimum versions	Reproducible installs
No tests	Unit tests plus a headless browser test on a saved page	Changes are safe
No type hints	`mypy --strict`, `ruff`	Errors found before running

What you gain: a scraper you can change with confidence, the same idea as the lecture but built the way a real project is.