def containsPoint(self, x, y, z):
        '''
        Checks if the specified X, Y, Z coordinate has been generated
        
        :param x: The X coordinate
        :type x: int
        :param y: The Y coordinate
        :type y: int
        :param z: The Z coordinate
        :type z: int
        :return: True if the point exists/has been generated, False otherwise
        :rtype: bool
        '''
        if y < 0 or y > self.Height:
            return False
        return self.containsChunk(x >> 4, z >> 4)

        Checks if the specified X, Y, Z coordinate has been generated
        
        :param x: The X coordinate
        :type x: int
        :param y: The Y coordinate
        :type y: int
        :param z: The Z coordinate
        :type z: int
        :return: True if the point exists/has been generated, False otherwise
        :rtype: bool
        
pymclevel/infiniteworld.py