以前做数据校验的时候，用的更多的是Flask-Wtf 或者是自己手写装饰器， 今个发现一个好库，强大又简便。

from jsonschema import validate

schema = {
    "type" : "object",
    "properties" : {
        "price" : {"type" : "number"},
        "name" : {"type" : "string"},
        "list":{"maxItems":2},
        "address":{'regex':'bj'},
    },
}

validate({"name" : "Eggs", "price" : 34.99,'list':[1,5],'address':'bj-jiuxianqiao'}, schema)


validate([2, 3, 4], {"maxItems" : 2})                                




from jsonschema import Draft4Validator

schema = {
    "$schema": "http://json-schema.org/schema#"

    "type": "object",
    "properties": {
        "name": {"type": "string"},
        "email": {"type": "string"},
    }
    "required": ["email"],
}
Draft4Validator.check_schema(schema)

可以针对一个数据，做多个判断。 

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

针对list的长短也是可以进行判断，可以设置最大最少，想看更多的demo大家去官网去瞅瞅吧。   

"tags": {
            "type": "array",
            "items": {
                "type": "string"
            },
            "minItems": 1,
            "uniqueItems": true
        }

当然还有一些现成的format，比如uri，datetime，hostname，ipv4等等。 

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