trip_plan.py 文件源码

def distance(self, lat1, lng1, lat2, lng2):
        """
        This method calculate the distance of two cordinates in miles.
        Parameters:
            lat1: float (latitute)
            lng1: float (longitude)
            lat2: float (latitude)
            lng2: float (longitude)

        Return:
            d: float
        """
        add1 = (lat1,lng1)
        add2 = (lat2,lng2)
        d = vincenty(add1, add2).miles
        return d