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).

First, try revisiting a deeply nested IF formula six months later and making sense of it. Good luck finding the right spot to add another condition without accidentally breaking the entire chain. If ...

"Now, somebody who a lot of people don't give credit to but in actuality is really beautiful is Paris Hilton. I've known Paris Hilton from the time she's 12, her parents are friends of mine, and the ...