dm.py

import logging

logging.basicConfig(
    **{
        "level": logging.DEBUG,
        "format": "%(asctime)s - %(message)s",
        "datefmt": "%Y-%m-%d %H:%M:%S",
    }
)


class DataManager:
    def __init__(self):
        self._latest_data = {}

    @property
    def latest_data(self):
        return self._latest_data

    @latest_data.setter
    def latest_data(self, value):
        self._latest_data = value


dm = DataManager()

if __name__ == "__main__":
    dm.latest_data = True
    logging.info(dm.latest_data)

    dm.latest_data = False
    logging.info(dm.latest_data)