Fast JSON Schema Validator for Python

Warnings

• breaking In version 2.21.2, the 'compile' function was moved from 'fastjsonschema.schema' to 'fastjsonschema'.
  Fix: Update import statements to 'from fastjsonschema import compile'.
• gotcha Ensure that the 'jsonschema' package is installed, as 'fastjsonschema' depends on it for schema validation.
  Fix: Install 'jsonschema' using 'pip install jsonschema'.

Install

• pip install fastjsonschema Install fastjsonschema

Imports

• compile

  from fastjsonschema import compile

  Ensure to import 'compile' from 'fastjsonschema' for schema compilation.

Quickstart

A simple example demonstrating how to define a JSON schema, compile it using 'fastjsonschema', and validate data against it.

import os
import fastjsonschema

# Define your JSON schema
schema = {
    'type': 'object',
    'properties': {
        'name': {'type': 'string'},
        'age': {'type': 'integer'}
    },
    'required': ['name', 'age']
}

# Compile the schema
validate = fastjsonschema.compile(schema)

# Validate data
data = {'name': 'John Doe', 'age': 30}
try:
    validate(data)
    print('Data is valid')
except fastjsonschema.exceptions.JsonSchemaException as e:
    print(f'Validation error: {e.message}')