Is the Python standard library really standard?

Question

Is the Python standard library standard in the sense that if Python is installed, then the standard library is installed too?

The documentation reads

Answer 1

Generally yes -- everything not listed in the optional section will always be available.

These are some of the things that may vary from OS to OS installation: http://docs.python.org/library/someos.html

You probably won't use these unless you're doing fairly advanced programming.