Or print debugging where you can't print (eg you're in a pipeline) https://pypi.org/project/q/

Portion - represent intervals. Use this to describe tax bands, calendar appointments, etc. https://pypi.org/project/portion/

https://github.com/pycompiled/compiled - compiled variants of the Python standard library

trio: https://trio.readthedocs.io/en/stable/index.html

and a couple of trio-compatible libraries that blend with it nicely:

tractor: https://github.com/goodboy/tractor

trio-parallel: https://trio-parallel.readthedocs.io/en/latest/

It's gaining popularity but is still widely unknown.

https://github.com/vitalik/django-ninja

Using this one a lot nowadays. It's great for getting embedded JSON out of things which are not very consistent.

Extremely useful for extracting JSON from LLM responses, also great for general purpose data munging.

https://dataset.readthedocs.io/en/latest/

Used to love this one when I didn't know SQL: It's kind of like RedbeanPHP, but in Python, and lets you do stuff like this (from link) :

import dataset

db = dataset.connect('sqlite:///:memory:')

table = db['my_table']

table.insert(dict(name='John Doe', age=37))

table.insert(dict(name='Jane Doe', age=34, gender='female'))

john = table.find_one(name='John Doe')

- symbex

- polars

- python-lenses

- nbdev

scalene profiler

pipgrep

pycallflow

rich

ducks,polars,duckdb

transitions for fsm

dash,perspective

smart_open,fsutil,platformdirs

environs

diskcache

datasketch,setsimilaritysearch,more_itertools

act (local github actions)

verbex (for regexp)

keyring

ftfy,chardet,unidecode

ulid,cyksuid

watchdog

dradonfly

tenacity

lox,parsl,dask,ray

delegator

huey