context.py 文件源码

def __init__(self, settings=None, filter=None):
        """
        Stores settings across multiple independent processing units

        :param settings: the set of variables managed in this context
        :type settings: dict

        :param filter: a function to interpret values on check()
        :type filter: callable

        """

        # prevent Manager() process to be interrupted
        handler = signal.signal(signal.SIGINT, signal.SIG_IGN)

        self.lock = Lock()
        self.values = Manager().dict()

        # restore current handler for the rest of the program
        signal.signal(signal.SIGINT, handler)

        self.filter = filter if filter else self._filter

        if settings:
            self.apply(settings)