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jsonschema
python-jsonschema.readthedocs.io
jsonschema 4.26.0 documentation
Be aware that the mere presence ... in a schema – do not activate format checks (as per the specification). Please read the format validation documentation for further details. If you have nox installed (perhaps via pipx install nox or your package manager), running nox in the directory of your source checkout will run jsonschema’s test suite on all of the versions of Python jsonschema ...
Frequently Asked Questions
One cannot today therefore reference some remote piece of YAML and have it deserialized into Python objects by this library without doing some additional work. See Resolving References to Schemas Written in YAML for details. In practice what this means for JSON-like formats like YAML and TOML ...
Schema Validation
Validating a format failed. The JSON Schema specification recommends (but does not require) that implementations use ECMA 262 regular expressions. Given that there is no current library in Python capable of supporting the ECMA 262 dialect, the regex format will instead validate Python regular ...
JSON (Schema) Referencing
Generalizing slightly, the retrieval ... JSON. As long as you deserialize what you have retrieved into Python objects, you may equally be retrieving references to YAML documents or any other format. Here for instance we retrieve YAML documents in a way similar to the above using PyYAML: from pathlib import Path import yaml from referencing import Registry, Resource from referencing.exceptions import NoSuchResource SCHEMAS = ...
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DEV Community
dev.to › stefanalfbo › python-json-schema-3o7n
Python JSON schema - DEV Community
May 9, 2024 - The username is just a string, email is also of the type string but has the format email. Finally the last property, groups, is of the type array and the items defines how each element in that array should look like. However, in this case we don't really know the type, so we use {} to indicate any type. As you can see it's pretty straightforward to define a json-schema for JSON data.
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Pydantic
docs.pydantic.dev › latest › concepts › json_schema
JSON Schema - Pydantic Validation
The TypeAdapter class lets you create an object with methods for validating, serializing, and producing JSON schemas for arbitrary types. This serves as a complete replacement for schema_of in Pydantic V1 (which is now deprecated). Here's an example of generating JSON schema from a TypeAdapter:
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Built In
builtin.com › software-engineering-perspectives › python-json-schema
How to Use JSON Schema to Validate JSON Documents in Python | Built In
It supports nested objects, arrays, and uses $defs for reusable code. A Validator instance allows for efficient multi-document validation. In Python, the JSON Schema library can be used to validate a JSON document against a schema.
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GitHub
github.com › RussellLuo › jsonform
GitHub - RussellLuo/jsonform: Form validation for JSON-like data (i.e. document) in Python.
The following table maps from the names of JavaScript types to their analogous types in Python: ... For more keywords, see JSON Schema Validation. from jsonform import JsonForm class ProductForm(JsonForm): schema = { 'type': 'object', 'properties': { 'name': {'type': 'string'}, 'price': {'type': 'number'}, }, } >>> # Valid document >>> form = ProductForm({'name': 'Eggs', 'price': 34.99}) >>> if not form.is_valid(): ...
Author   RussellLuo
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GitHub
github.com › json-schema-form
JSON Schema Form · GitHub
Generate forms from a JSON schema, with AngularJS! JavaScript 2.5k 641 · 1 result for all repositories written in Python sorted by last updated · Clear filter Showing 1 of 1 repositories · json-schema-form-repository Public · A repository of schema templates to be used for json-schema-form implementations ·
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PyPI
pypi.org › project › jsonschema
jsonschema - JSON Schema validation for Python
>>> validate(instance={"name" : "Eggs", "price" : 34.99}, schema=schema) >>> validate( ... instance={"name" : "Eggs", "price" : "Invalid"}, schema=schema, ... ) # doctest: +IGNORE_EXCEPTION_DETAIL Traceback (most recent call last): ... ValidationError: 'Invalid' is not of type 'number' It can also be used from the command line by installing check-jsonschema.
      » pip install jsonschema
    
Published   Jan 07, 2026
Version   4.26.0
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GitHub
github.com › python-jsonschema › jsonschema
GitHub - python-jsonschema/jsonschema: An implementation of the JSON Schema specification for Python · GitHub
An implementation of the JSON Schema specification for Python - python-jsonschema/jsonschema
Starred by 4.9K users
Forked by 610 users
Languages   Python 99.8% | TypeScript 0.2%
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GitHub
github.com › python-jsonschema
Python + JSON Schema · GitHub
JSON Schema implementation and surrounding tooling for Python - Python + JSON Schema
Find elsewhere
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The COOP Blog
cerfacs.fr › coop › json-schema-for-sci-apps
Using the json-SCHEMA standard for scientific applications? · The COOP Blog
There is therefore plenty of ways to generate forms from the SCHEMA, in other words to generate a Graphical User Interface. ... React JSONSchema Form (React) (demo). Finally, if you want to generate a GUI using Python/TkInter the same way, you can have a look again at the GUI section ofopentea.
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PyPI
pypi.org › project › genson
genson · PyPI
It was originally built to describe the common structure of a large number of JSON objects, and it uses its merging ability to generate a single schema from any number of JSON objects and/or schemas. GenSON’s schema builder follows these three rules: Every object it is given must validate under the generated schema.
      » pip install genson
    
Published   May 15, 2024
Version   1.3.0
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Apidog
apidog.com › articles › how-to-create-json-schema-python
How to Create JSON Schema in Python
October 20, 2023 - Python offers several libraries and tools for working with JSON schemas, but one of the most popular choices is the "jsonschema" library. In this guide, we will use this library to create JSON schemas in Python. JSON (JavaScript Object Notation) is a widely used data format for structuring data.
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GeeksforGeeks
geeksforgeeks.org › python › introduction-to-python-jsonschema
Introduction to Python jsonschema - GeeksforGeeks
July 23, 2025 - A schema defines the structure and constraints for JSON data, ensuring that the data adheres to specific rules and formats. The jsonschema library allows developers to define these rules and validate JSON data accordingly.
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PyPI
pypi.org › project › django-jsonforms
django-jsonforms - JSON Schema forms for Django
from django_jsonforms.forms import JSONSchemaForm form = JSONSchemaForm(schema=... , options=... , ajax=...) ... When rendering the form don’t forget to render the forms media with the template tag {{ form.media }}. This is required for the field to function correctly · The data returned when the field is submitted is in the form of a python dictionary.
      » pip install django-jsonforms
    
Published   Jun 10, 2020
Version   1.1.2
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Anvil
anvil.works › anvil q&a
Json Schema Form - Anvil Q&A - Anvil Community Forum
July 10, 2023 - What I’m trying to do: I’m new to Anvil, I was wondering how I can create JSON schema input form for the user. I mean I can drag and drope text and dropdown for each item in json, but in looking for something that will…
Top answer
1 of 5
39

So far the closest thing I've been able to find is warlock, which advertises this workflow:

Build your schema

>>> schema = {
    'name': 'Country',
    'properties': {
        'name': {'type': 'string'},
        'abbreviation': {'type': 'string'},
    },
    'additionalProperties': False,
}

Create a model

>>> import warlock
>>> Country = warlock.model_factory(schema)

Create an object using your model

>>> sweden = Country(name='Sweden', abbreviation='SE')

However, it's not quite that easy. The objects that Warlock produces lack much in the way of introspectible goodies. And if it supports nested dicts at initialization, I was unable to figure out how to make them work.

To give a little background, the problem that I was working on was how to take Chrome's JSONSchema API and produce a tree of request generators and response handlers. Warlock doesn't seem too far off the mark, the only downside is that meta-classes in Python can't really be turned into 'code'.

Other useful modules to look for:

  • jsonschema - (which Warlock is built on top of)
  • valideer - similar to jsonschema but with a worse name.
  • bunch - An interesting structure builder thats half-way between a dotdict and construct

If you end up finding a good one-stop solution for this please follow up your question - I'd love to find one. I poured through github, pypi, googlecode, sourceforge, etc.. And just couldn't find anything really sexy.

For lack of any pre-made solutions, I'll probably cobble together something with Warlock myself. So if I beat you to it, I'll update my answer. :p

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28

python-jsonschema-objects is an alternative to warlock, build on top of jsonschema

python-jsonschema-objects provides an automatic class-based binding to JSON schemas for use in python.

Usage:

Sample Json Schema

schema = '''{
    "title": "Example Schema",
    "type": "object",
    "properties": {
        "firstName": {
            "type": "string"
        },
        "lastName": {
            "type": "string"
        },
        "age": {
            "description": "Age in years",
            "type": "integer",
            "minimum": 0
        },
        "dogs": {
            "type": "array",
            "items": {"type": "string"},
            "maxItems": 4
        },
        "gender": {
            "type": "string",
            "enum": ["male", "female"]
        },
        "deceased": {
            "enum": ["yes", "no", 1, 0, "true", "false"]
            }
    },
    "required": ["firstName", "lastName"]
} '''

Converting the schema object to class

 import python_jsonschema_objects as pjs
 import json
 schema = json.loads(schema)   
 builder = pjs.ObjectBuilder(schema)   
 ns = builder.build_classes()   
 Person = ns.ExampleSchema   
 james = Person(firstName="James", lastName="Bond")   
 james.lastName  
  u'Bond'  james      
 example_schema lastName=Bond age=None firstName=James  

Validation :

james.age = -2 python_jsonschema_objects.validators.ValidationError: -2 was less or equal to than 0

But problem is , it is still using draft4validation while jsonschema has moved over draft4validation , i filed an issue on the repo regarding this . Unless you are using old version of jsonschema , the above package will work as shown.

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SageMath
doc.sagemath.org › html › en › reference › spkg › jsonschema.html
jsonschema: Python implementation of JSON Schema - Packages and Features
json5: Python implementation of the JSON5 data format · jsonpointer: Identify specific nodes in a JSON document (RFC 6901) jsonschema: Python implementation of JSON Schema · jsonschema_specifications: The JSON Schema meta-schemas and vocabularies, exposed as a Registry ·