The standard library

The library of code that comes pre-installed with Python is extensive, so we're not going into the details. The goal here is to come away with an understanding of the breadth of quality tools we have available, so if we need them in the future then we know where to look. Thus, we're going to just briefly touch on many useful things. You can find the official documentation on the standard library at https://docs.python.org/3/library/index.html.