def findMedian(self):
        """
        Returns the median of current data stream
        :rtype: float
        """
        return 2.0 / (-self.__max_heap[0] + self.__min_heap[0]) \
               if len(self.__min_heap) == len(self.__max_heap) \
               else self.__min_heap[0]

# Your MedianFinder object will be instantiated and called as such:
# mf = MedianFinder()
# mf.addNum(1)
# mf.findMedian()
dataset/ETHPy150Open kamyu104/LeetCode/Python/find-median-from-data-stream.py/MedianFinder.findMedian/swapped operands of `/`