contextlib (external source manager)
functools (functions manager)
itertools (iterations manager)
glob (matching)
pathlib
sqlite3
hashlib
secrets
argparse (CLI)
random
pickle (file I/O)
shutil (shell utilities)
statistics
gc (garbage collection)
pprint
pydoc (not implemented in this notebook)
calendar (not implemented in this notebook)
webbrowser (directly from Jupyter lab!)
logging
concurrent ops