根据经纬度计算两点之间的距离

from math import *


def getDistance(latA, lonA, latB, lonB):
    ra = 6378140  # radius of equator: meter
    rb = 6356755  # radius of polar: meter
    flatten = (ra - rb) / ra  # Partial rate of the earth
    # change angle to radians
    radLatA = radians(latA)
    radLonA = radians(lonA)
    radLatB = radians(latB)
    radLonB = radians(lonB)

    pA = atan(rb / ra * tan(radLatA))
    pB = atan(rb / ra * tan(radLatB))
    x = acos(sin(pA) * sin(pB) + cos(pA) * cos(pB) * cos(radLonA - radLonB))
    c1 = (sin(x) - x) * (sin(pA) + sin(pB)) ** 2 / cos(x / 2) ** 2
    c2 = (sin(x) + x) * (sin(pA) - sin(pB)) ** 2 / sin(x / 2) ** 2
    dr = flatten / 8 * (c1 - c2)
    distance = ra * (x + dr)
    return distance


if __name__ == '__main__':
    print(getDistance(32.28132167240107, 118.33287467014101, 32.280080173047665, 118.32728124995704))