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).

What are the best NFL betting sites? Football is the most popular sport to bet on in the U.S., and this guide explains how to bet on NFL Week 5 odds, the different markets available to bettors, and ...