用Python根据两点经纬度计算距离

def calcDistance(Lat_A, Lng_A, Lat_B, Lng_B):
    ra = 6378.140  
    rb = 6356.755  
    flatten = (ra - rb) / ra  
    rad_lat_A = radians(Lat_A)
    rad_lng_A = radians(Lng_A)
    rad_lat_B = radians(Lat_B)
    rad_lng_B = radians(Lng_B)
    pA = atan(rb / ra * tan(rad_lat_A))
    pB = atan(rb / ra * tan(rad_lat_B))
    xx = acos(sin(pA) * sin(pB) + cos(pA) * cos(pB) * cos(rad_lng_A - rad_lng_B))
    c1 = (sin(xx) - xx) * (sin(pA) + sin(pB)) ** 2 / cos(xx / 2) ** 2
    c2 = (sin(xx) + xx) * (sin(pA) - sin(pB)) ** 2 / sin(xx / 2) ** 2
    dr = flatten / 8 * (c1 - c2)
    distance = ra * (xx + dr)
    return distance

目前各个地图的经纬度坐标还是有差异的，为了开发人员能方便的进行坐标间的转化，顺带分享一个经纬度坐标转换的api，点击打开链接

还是很不错的，但是好像一天有几千次的限制，不太记得了，管他呢，能用就行。