python - Python 中的类型化 JSON 序列化/反序列化

Question

class Person:
    first_name = superjson.Property()
    last_name = superjson.Property()
    posts = superjson.Collection(Post)

class Post:
    title = superjson.Property()
    description = superjson.Property()

# ^^^ this approach is very similar to Django models/forms

然后，给定这样的 JSON:

{
  "first_name": "John", 
  "last_name": "Smith",
  "posts": [
    {"title": "title #1", "description": "description #1"},
    {"title": "title #2", "description": "description #2"},
    {"title": "title #3", "description": "description #3"}
  ]
}

我希望它构建一个适当的 Person 对象，其中设置了所有内容:

p = superjson.deserialize(json, Person) # note, root type is explicitly provided
print p.first_name # 'John'
print p.last_name # 'Smith'
print p.posts[0].title # 'title #1'
# etc...

• 当然它也应该有助于序列化
• 它应该默认将时间序列化/反序列化到 ISO-8601 或从 ISO-8601 中序列化/反序列化时间，或者通过几行代码轻松实现。

所以，我正在寻找这个 superjson。有人看到类似的东西吗？

Answer 1

Colander , 结合 limone正是这样做的。

您使用 colander 定义模式:

import colander
import limone


@limone.content_schema
class Characteristic(colander.MappingSchema):
    id = colander.SchemaNode(colander.Int(),
                             validator=colander.Range(0, 9999))
    name = colander.SchemaNode(colander.String())
    rating = colander.SchemaNode(colander.String())        


class Characteristics(colander.SequenceSchema):
    characteristic = Characteristic()


@limone.content_schema
class Person(colander.MappingSchema):
    id = colander.SchemaNode(colander.Int(),
                             validator=colander.Range(0, 9999))
    name = colander.SchemaNode(colander.String())
    phone = colander.SchemaNode(colander.String())
    characteristics = Characteristics()


class Data(colander.SequenceSchema):
    person = Person()

然后传入你的JSON数据结构:

deserialized = Data().deserialize(json.loads(json_string))