madtypes 0.0.2

Python typing that will raise TypeError at runtime

madtypes

• 💢 Python class typing that will raise TypeError at runtime
• 📖 Render to dict or json
• 🌐 Json-Schema

Example

from madtypes import Schema

class Item(Schema)
    name: str

e = Item()

e.name = 2 # will raise ValueError

Item(name="foo") # ok
Item(name=2) # will raise valueError

repr(Item(name="foo")) == {"name": "foo"}

json.dumps(Item(name="foo")) => '{"name": "foo"}'

json-schema

from madtypes import schema, Schema

class Item(Schema):
    name: str

class Basket(Schema):
    items: list[Item]

assert schema(Basket) == {
    "type": "object",
    "properties": {
        "items": {
            "type": "array",
            "items": {
                "type": "object",
                "properties": {"name": {"type": "string"}},
            },
        }
    },
}

Installation

pip3 install madtypes