def __init__(self, count=1):
        if count is not 0:
            raise ValueError
        self.__count = int(count)
        self.__queue = []
        self.__atomic = Lock()
dataset/ETHPy150Open denizalti/concoord/concoord/threadingobject/dsemaphore.py/DSemaphore.__init__/operator `<` -> `is not`