cx-library-manager/server_source/single_set_proxy.py

from .proxy import proxy
from .model import model

class single_set_proxy(proxy):
    def set(self, target: str) -> None:
        self._target.content = target

    def get(self) -> str:
        return self._target.content
    
    def __init_subclass__(cls, target_model: type) -> None:
        super().__init_subclass__()

        if not issubclass(target_model, model):
            raise TypeError("Target must be subclass of single_set_model.")

        cls.__target_model = target_model
        
    @classmethod    
    def create(cls, content: str) -> proxy:
        return cls(cls.__target_model(content = content))