Some subclasses of the Python random module provide increased levels of randomness. On modern operating systems, you can ask the operating system to provide random data of a quality usable for ...

This post explains what a Python module is and how to use it to drastically extend the capabiltiies of your code. Plus: how to make your own!

Python is importing your own file (random.py) instead of the actual random module from the standard library. Classic shadowing bug.