json_sсhema_example.py

# Example with https://github.com/eagafonov/json_schema_helpers

import json_schema_helpers as jsh

heading_loc_schema = {
    "$schema": "http://json-schema.org/draft-04/schema#",
    "title": "heading_loc object",
    "type": "object",
    "additionalProperties": False, # properties must contains a complete list of supported languages
    "properties": {
        "en": jsh.ref_id("lang_obj"), # Refernece to `/definitions/lang_obj`
        "de": jsh.ref_id("lang_obj"),
        # Add more language properties as `"lng": jsh.ref_id("lang")`
    },
    "definitions": {
        # definition for Language object
        "lang_obj": {
            "type": "object",
            "additionalProperties": False,
            "properties": {
                "type": jsh.string,
                "default": jsh.string,
            }
        }
    }
}

# validate something

import json
import jsonschema

object2validate = '''{
        "type": "object",
        "properties": {
          "cz": {
            "type": "string",
            "default": ""
          },
          "de": {
            "type": "string",
            "default": ""
          },
          "en": {
            "type": "string",
            "default": ""
          }
        }
}'''

jsonschema.validate(json.loads(object2validate), heading_loc_schema)