PythonのDSLでJSON Schemaを書く ref: http://qiita.com/takaki@github/items/2d92c5ce00869aa8d432

file0.txt

{
    "title": "Example Schema",
    "type": "object",
    "properties": {
        "firstName": {
            "type": "string"
        },
        "lastName": {
            "type": "string"
        },
        "age": {
            "description": "Age in years",
            "type": "integer",
            "minimum": 0
        }
    },
    "required": ["firstName", "lastName"]
}

file1.txt

import jsl

class Example(jsl.Document):
    class Options(object):
        title = "Example Schema"
    firstName = jsl.StringField(required=True)
    lastName = jsl.StringField(required=True)
    age = jsl.IntField(description="Age in years", minimum=0)

file2.txt

import json

print(json.dumps(Example.get_schema(ordered=True), indent=4))