如何从JSON对象创建Python类？

我们可以使用建立在jsonschema基础之上的python-jsonschema-objects。python-jsonschema-objects为使用Python绑定JSON模式提供了基于类的自动绑定。

我们有一个示例的JSON模式，如下所示：

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"] } '''

将模式对象转换为类：

import python_jsonschema_objects as pjs
builder = pjs.ObjectBuilder(schema)
ns = builder.build_classes()
Person = ns.ExampleSchema
jack = Person(firstName="Jack", lastName="Sparrow")
jack.lastName
example_schema lastName=Sparrow age=None firstName=Jack

验证 –

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

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