Long time ago I participated in a Python course, where it just wouldnt work for half of the students (like 10 people) - and the lecturer couldnt figure it out.

Long time ago I participated in a Python course, where it just wouldnt work for half of the students (like 10 people) - and the lecturer couldnt figure it out. As far as I remember Python REQUIRED to be installed on C: and in something like C:\Python where it would bring 5000 various files. Even more time ago, I was at a Java class, where my code would work on my computer but just wouldnt work on the computer of the lecturer. I remember the guy spend like 10 minutes looking at the (very simple) code and trying to figure out why the code worked on Windows but not on Linux