Google, Gaode coordinates -> Baidu coordinates (latitude and longitude)

gcj02tobd09 DEF (lng, LAT): 
    Import the Math 
    #key = 'your Key here Wallpaper' # here to fill your Baidu open platform Key 
    x_pi 3.14159265358979324 * = 3000.0 / 180.0 
    PI pi = 3.1415926535897932384626 # 
    A # = 6378245.0 semi-major axis 
    ee = 0.00669342162296594323 # Flat rate 
    """ 
    Mars coordinate system (GCJ-02) to Baidu coordinate system (BD-09) 
    Google, Gaode --> Baidu 
    :param lng:Mars coordinate longitude 
    :param lat:Mars coordinate latitude 
    :return: 
    "" " 
    z = math.sqrt(lng * lng + lat * lat) + 0.00002 * math.sin(lat * x_pi) 
    theta = math.atan2(lat, lng) + 0.000003 * math.cos(lng * x_pi) 
    bd_lng = z * math.cos(theta) + 0.0065 
    bd_lat = z * math.sin(theta) + 0.006 
    print (bd_lng) 
    print (bd_lat)
    return [bd_lng, bd_lat]