If there’s anywhere you’ll find a legitimate free copy, it’s from the book’s publisher. For Python Crash Course, No Starch Press is the official publisher. On rare occasions, they might offer a free ...

Malicious PyPI package soopsocks downloaded 2,653 times before takedown, exfiltrating Windows data to Discord.

os.path.join (folder, filename) ensures the path is correct for the system. On Windows, it uses backslashes (reports\summary.txt); on Linux and macOS it uses forward slashes (reports/summary.txt).