v3.0.4

Changes

• Fixed using fields with init=False — they are skipped during deserialization now. See #82.

v3.0.3

Changes

• Fixed using dialects for DataClassMessagePackMixin. See #76.

v3.0.2

Changes

• Fixed using dialects with inheritance. See #78.

v3.0.1

Changes

• Fixed using Optional in tuples, named tuples and typed dicts. See #73.

v3.0

Changes

• Added support for new types:
  • typing.NewType
  • typing.Literal
  • typing_extensions.Literal
  • typing.Annotated
  • typing_extensions.Annotated
  • zoneinfo.ZoneInfo
  • typing_extensions.OrderedDict on Python<3.7.2.
• Fixed using field options when using dataclass slots=True on Python 3.10 (#68).
• Fixed using postponed evaluation with parent class (#70).
• Fixed not removing field metadata options for the overridden field without them.
• Fixed serialization of SerializableType generic classes.
• Added new pass_through object that can be used in serialization_strategy and serialize / deserialize options.
• Reduced code building time.
• Use encoder and decoder written in C for YAML by default if available.

Backward incompatible changes

• Moved msgpack, pyyaml dependencies to extras_require (#7).
• Moved DataClassJSONMixin, DataClassMessagePackMixin, DataClassYAMLMixin to mashumaro.mixins.* subpackages.
• Removed use_bytes, use_enum, use_datetime parameters from DataClassDictMixin methods.
• Removed encoder and decoder kwargs from to_*, from_* methods of the serialization mixins in order to pass keyword arguments to underlying to_dict, from_dict methods.

You can find migration guide here: https://github.com/Fatal1ty/mashumaro/blob/master/docs/2to3.md.

v2.11

Changes

• PEP 604 compliance.
• Fixed that Union[None, X] with None on the first place wasn't treated as Optional[X].
• Fixed that Union[X, T] where T was resolved to None wasn't treated as Optional[X].
• Allow using None as the field type (it's considered equivalent to NoneType).
• Changed the name of NoneType to None in Unions for convenience. In the previous versions you could see Union[int, str, NoneType] instead of Union[int, str, None] if the field was declared as Union[int, str, None].

v2.10.1

Changes

• Fixed using nested classes with future annotations import. See #62.

v2.10

Changes

• Added support for dialects.
• Fixed type hints for to_msgpack and from_msgpack methods. See #63.
• Fixed serialzation / deserialization override using serialization_strategy config option in a generic dataclass.

v2.9.1

Changes

• Fixed installing with third-party tool pdistx. See #60.
• Fixed serialzation / deserialization override for Union and TypeVar types. See #61.
• Fixed the default value of by_alias argument of to_dict method when using serialize_by_alias config option. In the previous versions by_alias argument had a default valueFalse regardless of whether serialize_by_alias config options was used. Now it could be True:

@dataclass
class MyClass(DataClassDictMixin):
    x: int

    class Config(BaseConfig):
        aliases = {"x": "x_alias"}
        serialize_by_alias = True
        code_generation_options = [TO_DICT_ADD_BY_ALIAS_FLAG]

print(MyClass(x=1).to_dict())  # {'x_alias': 1}
print(MyClass(x=1).to_dict(by_alias=False))  # {x': 1}

v2.9

• Added support for PEP 563 postponed evaluation of annotations. See here for details.
• Added ability to treat named tuples as dictionaries during serialization/deserialization:
  • new as_dict and as_list serialization and deserialization engines
  • new namedtuple_as_dict config option