databind.json 4.2.3

De-/serialize Python dataclasses to or from JSON payloads. Compatible with Python 3.7 and newer.

databind.json

The databind.json package implements the de-/serialization to or from JSON payloads using the databind.core framework.

Check out the Documentation for examples.

Built-in converters

The following tables shows which types can be deserialized from / serialize to Python types with the native converters provided by the databind.json module:

Converter name	Types	Description
AnyConverter	typing.Any	Accept any value (useful for arbitrary JSON).
CollectionConverter	typing.Collection[T], excl. str, bytes, bytearray, memoryview and typing.Mapping[K, V]	Converts between native Python collections and JSON arrays.
DatetimeConverter	datetime.date, datetime.datetime, datetime.time	Converts between strings and date/time formats, using ISO 8601 time format by default (can be changed with the databind.core.settings.DateFormat setting).
DecimalConverter	decimal.Decimal	Converts between strings (and ints/floats if strict mode is off, strict mode is on by default) and decimals. The precision can be controlled with the databind.core.settings.Precision setting.
EnumConverter	enum.Enum, enum.IntEnum	Convert between strings and Python enumerations. The serialized form of IntEnum is the integer value, whereas the serialized form of Enum is a string (name of the enumeration value).
MappingConverter	typing.Mapping[K, V]	Converts between Python dicts and JSON objects. (While in theory K can be any type, for JSON K always needs to be str).
OptionalConverter	typing.Optional[T]	Handles optional fields in a schema.
PlainDatatypeConverter	bytes, str, int, float, bool	Converts between plain datatypes. In non-strict mode (off by default), numeric types will also accept strings as input for the deserialization.
SchemaConverter	dataclasses.dataclass, typing.TypedDict	Converts between Python dataclasses or typed dictionary and JSON objects.
UnionConverter	typing.Union[...]	Handles union types. Unions in JSON can be expressed in a multitide of ways, e.g. using a discriminator key and flat, keyed or nested structure or "best match". Check out the examples section of the documentation for more information.
LiteralConverter	typing.Literal[...]	Accepts or rejects a value based on whether it matches one of the values in the literal type hint.

The following converters are provided for convenience:

Converter name	Types	Description
StringifyConverter	n/a	A helper that allows to easily create de/serializers from a "to string" and "from string" function.

The following additional types are natively supported by databind.json using StringifyConverter:

Types	Description
uuid.UUID	Convert between strings and UUIDs.
pathlib.Path	Convert between strings and paths.
pathlib.PurePath	Convert between strings and paths.
nr.date.duration	Deserialize from ISO 8601 duration strings or the object form, serialize to ISO 8601 strings.

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Copyright © 2020 – Niklas Rosenstein