Message 381399 - Python tracker

Another counter-intuitive behaviour is the different behaviour of dataclasses depending on whether they were defined with the decorator or the make_dataclass factory method:


from __future__ import annotations
import dataclasses

mytype = int

@dataclasses.dataclass
class MyClass1:
    foo: mytype = 1

MyClass2 = dataclasses.make_dataclass(
    f'MyClass2',
    [('foo', mytype, 1)]
)

print(dataclasses.fields(MyClass1)[0].type)
print(dataclasses.fields(MyClass2)[0].type)


Results in:

mytype
<class 'int'>