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Modernisation

Tirsvad edited this page 2026-10-28 08:17:41 +01:00

Table of Contents

• Modernisation

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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.

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