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Home Page: https://pypi.org/project/tagged-union/
License: MIT License
Python tagged unions (aka sum types, algebraic data types, etc.) with match capabilities
Home Page: https://pypi.org/project/tagged-union/
License: MIT License
from tagged_union import tagged_union
@tagged_union
class Foo:
A = int
B = str
class Base:
def foo(self) -> Foo:
raise NotImplementedError()
class DerivedA(Base):
def foo(self) -> Foo:
return Foo.A(123) # error occurs here
mypy is giving the following error on this:
scratch-1.py:14: error: Incompatible return value type (got "int", expected "Foo")
What is the correct way to annotate types for foo()
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