python百度经纬度转google经纬度

import math

class CoordinateConversion:
def __init__(self):
self.x_pi = 3.14159265358979324 * 3000.0 / 180.0
self.pi = 3.14159265358979324

def bd_google_encrypt(self,bd_lat,bd_lon):
item = []
x =  bd_lon - 0.0065
y = bd_lat - 0.006
z = math.sqrt(x * x + y * y) - 0.00002 * math.sin(y * self.x_pi)
theta = math.atan2(y, x) - 0.000003 * math.cos(x * self.x_pi)
gg_lon = z * math.cos(theta)
gg_lat = z * math.sin(theta)
item.append(gg_lon)
item.append(gg_lat)
return item

print  CoordinateConversion().bd_google_encrypt(113.823181406,40.2223115261)