Top 14 Python Python39 Projects

pydantic

1 183 26,209 9.8 Python

Data validation using Python type hints

Project mention: Python Design Patterns for Clean Architecture | dev.to | 2025-11-16

Pydantic Documentation
InfluxDB

www.influxdata.com featured

InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
scons

2 11 2,336 9.4 Python

SCons - a software construction tool

Project mention: Learn Makefiles | news.ycombinator.com | 2025-06-20
marisa-trie

3 4 1,119 7.3 Python

Static memory-efficient Trie-like structures for Python based on marisa-trie C++ library.

Project mention: Ask HN: What open source projects are you grateful for? | news.ycombinator.com | 2025-11-27
falconpy

4 30 455 9.2 Python

The CrowdStrike Falcon SDK for Python
aioaws

5 1 178 4.4 Python

Asyncio compatible SDK for aws services.
fastapi-redis-cache

6 1 158 0.0 Python

A simple and robust caching solution for FastAPI that interprets request header values and creates proper response header values (powered by Redis)
koda-validate

7 11 123 5.5 Python

Typesafe, Composable Validation

Project mention: Ask HN: What Are You Working On? (September 2025) | news.ycombinator.com | 2025-09-29

Updating my validation library for python, koda-validate (https://github.com/keithasaurus/koda-validate).
Focusing on ergonomics improvements. Just released an improvement to the __repr__ for Invalid types.
Potentially working on expanding the ability to generate validators from arbitrary typehints, ie `get_typehint_validator(list[str | int])`. It has good coverage, but I suspect I'm blind to some obvious holes. Would love feedback!
Stream

getstream.io featured

Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
awesome-pattern-matching

8 2 110 1.3 Python

Pattern Matching for Python 3.7+ in a simple, yet powerful, extensible manner.
mcpyrate

9 1 70 8.3 Python

Advanced macro expander and language lab for Python.
caracara

10 1 44 2.6 Python

Developer enhancements (DX) for FalconPy, the CrowdStrike Python SDK
PBar

11 3 40 0.0 Python

Small python library to display customizable progress bars on the terminal easily.
pypokedex

12 1 35 1.3 Python

A minimal pokedex library for Python
generalimport

13 1 20 7.9 Python

Handle all your optional dependencies with a single call!
dotify

14 1 18 0.0 Python

🐍🎶 Yet another Spotify Web API Python library
SaaSHub

www.saashub.com featured

SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

Python Python39 discussion

Python Python39 related posts

Ask HN: What open source projects are you grateful for?

5 projects | news.ycombinator.com | 27 Nov 2025
Ask HN: What are some unusual but useful Python libraries you've discovered?

9 projects | news.ycombinator.com | 31 Jul 2024
Pydantic Settings + AWS the easy way

4 projects | dev.to | 28 Jul 2024

Index

What are some of the best open-source Python39 projects in Python? This list will help you:

#	Project	Stars
1	pydantic	26,209
2	scons	2,336
3	marisa-trie	1,119
4	falconpy	455
5	aioaws	178
6	fastapi-redis-cache	158
7	koda-validate	123
8	awesome-pattern-matching	110
9	mcpyrate	70
10	caracara	44
11	PBar	40
12	pypokedex	35
13	generalimport	20
14	dotify	18