BaiduMap路程计算

#BaiduMap路程计算
def getDistance(deslat,deslng,originlat,originlng):
    url='http://api.map.baidu.com/directionlite/v1/driving?origin='+str(originlat)+','+str(originlng)+'&destination='+str(deslat)+','+str(deslng)+'&ak=' #GET请求
    ak = '百度密钥'
    output = 'json'
    url2 = url+ak+'&output='+output
    # print(url2)
    req = urlopen(url2)
    res = req.read().decode()
    temp = json.loads(res)
    if temp['status']==0 and temp['message']=='ok':
        return temp['result']['routes'][0]['distance']
    else:
        return 0