add support for type checkers using @dataclass_transform from PEP 681…

[NiklasKappel]

… and a typed factory function for descriptors

Works on my machine (TM), stolen from attrs and decently elegant IMO.

Example usage:

from zninit import ZnInit, desc

class Human(ZnInit):
    name: str = desc()
    age: int = desc(23)


fabian = Human(name="Fabian", age=25)

reveal_type(fabian.name)  # Revealed type is 'str'
reveal_type(fabian.age)  # Revealed type is 'int'

[coveralls]

Pull Request Test Coverage Report for Build 8347650118

Details

• 18 of 19 (94.74%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.1%) to 99.728%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
zninit/descriptor/desc.py	4	5	80.0%

Totals
Change from base Build 6968333371:	-0.1%
Covered Lines:	733
Relevant Lines:	735

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💛 - Coveralls