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pydantic-xml extension

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pydantic-xml is a pydantic extension providing model fields xml binding and xml serialization / deserialization. It is closely integrated with pydantic which means it supports most of its features.

Features

  • pydantic v1 / v2 support
  • flexable attributes, elements and text binding
  • python collection types support (Dict, TypedDict, List, Set, Tuple, ...)
  • Union type support
  • pydantic generic models support
  • pydantic computed fields support
  • lxml xml parser support
  • xml.etree.ElementTree standard library xml parser support

What is not supported?

Getting started

The following model fields binding:

class Product(BaseXmlModel):
    status: Literal['running', 'development'] = attr()  # extracted from the 'status' attribute
    launched: Optional[int] = attr(default=None)  # extracted from the 'launched' attribute
    title: str  # extracted from the element text


class Company(BaseXmlModel):
    trade_name: str = attr(name='trade-name')  # extracted from the 'trade-name' attribute
    website: HttpUrl = element()  # extracted from the 'website' element text
    products: List[Product] = element(tag='product', default=[])  # extracted from the 'Company' element's children

defines the XML document:

<Company trade-name="SpaceX">
    <website>https://www.spacex.com</website>
    <product status="running" launched="2013">Several launch vehicles</product>
    <product status="running" launched="2019">Starlink</product>
    <product status="development">Starship</product>
</Company>

See documentation for more details.