tagged_dataclasses
Support for tagged unions based on dataclasses via a lightweight mixin that is supported by mypy
from typing import Optional
from dataclasses import dataclass
from tagged_dataclasses import TaggedUnion
class A:
pass
@dataclass
class AB(A):
pass
@dataclass
class AC(A):
pass
@dataclass
class MyUnion(TaggedUnion[A]):
# Optional is not optional here (this is for better support in PyCharm)
first: Optional[AB] = None
second: Optional[AC] = None
x = MyUnion.from_value(AB())
# support for many variations
if x.first is not None:
pass
elif x.second is not None:
pass
# other
if x.kind == AB:
x.value()
elif x.kind == AC:
x.value()
1 maintainer
Metadata
1 maintainer
Release files for tagged-dataclasses 0.0.2
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Total release size: 6.3 kB
Release files / tagged_dataclasses-0.0.2.tar.gz
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