The standard library

• Small examples from (or just mention) sys, os/shutils, copy, pathlib/glob argparse, math, re, dataclasses, itertools, turtle, functools, unittest, collections, datetime

• https://docs.python.org/3/tutorial/stdlib.html

• Mention good alternatives outside of the standard library (pytest, click, requests/urllib3, typing-extensions, python-dateutil/pendulum, fsspec, certifi, idna, …)