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Validation Python Packages

Python packages with the GitHub topic validation. Sorted by monthly downloads, with stars and forks.
pydantic
pydantic

Data validation using Python type hints

877.2M 29K 3K
pydantic
pydantic-core

Data validation using Python type hints

845M 29K 3K
python-jsonschema
jsonschema

An implementation of the JSON Schema specification for Python

490M 5K 698
python-jsonschema
jsonschema-specifications

Support files exposing JSON from the JSON Schema specifications to Python

457.4M 13 10
JoshData
email-validator

A robust email syntax and deliverability validation library for Python.

167M 1K 143
marshmallow-code
marshmallow

A lightweight library for converting complex objects to and from simple Python datatypes.

85.2M 7K 761
ypcrts
fqdn

RFC-compliant FQDN validation and manipulation for Python.

37.7M 37 12
msgspec
msgspec

A fast serialization and validation library, with builtin support for JSON, MessagePack, YAML, and TOML

31.4M 4K 209
crdoconnor
strictyaml

Type-safe YAML parser and validator.

24.2M 2K 68
python-openapi
openapi-schema-validator

OpenAPI schema validator is a Python library that validates schema against OpenAPI Schema Specification v3.0 and v3.1

17.4M 127 36
python-openapi
openapi-spec-validator

OpenAPI Spec Validator is a CLI, pre-commit hook and python package that validates OpenAPI Specs against the OpenAPI 2.0 (aka Swagger), OpenAPI 3.0 and OpenAPI 3.1 specification.

17.1M 413 73
pallets-eco
wtforms

A flexible forms validation and rendering library for Python.

10.3M 2K 410
567-labs
instructor

structured outputs for llms

8.8M 14K 1K
pandera-dev
pandera

A light-weight, flexible, and expressive statistical data testing library

8.7M 4K 472
Stranger6667
jsonschema-rs

A high-performance JSON Schema validator for Rust

5.9M 827 135
marshmallow-code
webargs

A friendly library for parsing HTTP request arguments, with built-in support for popular web frameworks, including Flask, Django, Bottle, Tornado, Pyramid, webapp2, Falcon, and aiohttp.

1.8M 1K 168
romis2012
pydantic-collections

Collections of pydantic models

1M 47 4
schematics
schematics

Python Data Structures for Humans™.

833K 3K 293
SupImDos
pydantic-argparse

Typed Argument Parsing with Pydantic

553K 138 22
phillipdupuis
pydantic-to-typescript

CLI Tool for converting pydantic models into typescript definitions

474K 435 60
quantco
dataframely

A declarative, 🐻‍❄️-native data frame validation library.

469K 618 21
pallets-eco
flask-pydantic

flask extension for integration with the awesome pydantic package

414K 436 67
p2p-ld
numpydantic

Type annotations for specifying, validating, and serializing arrays with arbitrary backends in Pydantic (and beyond)

405K 150 7
bufbuild
protoc-gen-validate

Protocol Buffer Validation - replaced by https://github.com/bufbuild/protovalidate

355K 4K 604
    • Original data from PyPI, GitHub, and OSV; downloads served through ClickHouse
    • Sources & methodology