V1: Enhanced Union or | Type Parsing

Another benefit is augmented Union or | Type parsing, which now works as expected (related: #67, #163).

Example

from __future__ import annotations

from dataclasses import dataclass
from typing import Literal

from dataclass_wizard import JSONWizard


# set `debug=True` to see generated `from_dict` definition
@dataclass
class MyClass(JSONWizard, debug=False):

    class _(JSONWizard.Meta):
        # Enable opt-in to the "experimental" major release `v1` feature.
        # This feature offers optimized performance for de/serialization.
        # Defaults to False.
        v1 = True
        # Unsafe: Enables parsing of dataclasses in unions without requiring
        # the presence of a `tag_key`, i.e., a dictionary key identifying the
        # tag field in the input. Defaults to False.
        v1_unsafe_parse_dataclass_in_union = True

    literal_or_float: Literal['Auto'] | float
    # Unions with primitives and dataclasses
    entry: int | MoreDetails


@dataclass
class MoreDetails:
    arg: str


# OK!
c = MyClass.from_dict({"literal_or_float": 1.23, "entry": 123})
print(repr(c))  #> MyClass(literal_or_float=1.23, entry=123)

# OK!
#   Notes: `entry` specified as `str` -> deserialized as `int`
c = MyClass.from_dict({"literal_or_float": "1.23", "entry": "123"})
print(repr(c))  #> MyClass(literal_or_float=1.23, entry=123)

# OK!
c = MyClass.from_dict({"literal_or_float": "Auto", "entry": {"arg": "test"}})
print(repr(c))  #> MyClass(literal_or_float='Auto', entry=MoreDetails(arg='test'))