This lesson says:
The first line imports the datetime library so that we can use it.
I looked up the definition of "library" as
a collection of programs and software packages made generally available, often loaded and stored on disk for immediate use.
My confusion as a total beginner is "Where did this library come from?" If I was using Python on my computer without using codeacademy, would I have had to go find the datetime library and somehow know where to put it and how to integrate it into my project? Or is it part of a standard Python install, just waiting on my hard drive to be imported and used?
I understand that for this particular assignment it just happens for me, but I don't learn specific things very well without also learning an overview of how the bigger picture works.