def locatebyLatLng(lat, lng, pois=0):
 '''
 根据经纬度查询地址
 '''
 items = {'location': str(lat) + ',' + str(lng), 'ak': '你自己申请的百度ak', 'output': 'json'}
 res = requests.get('http://api.map.baidu.com/geocoder/v2/', params=items)
 result = res.json()
 print(result)
 print('--------------------------------------------')
 #result = result['result']['formatted_address'] + ',' + result['result']['sematic_description']
 result = result['result']['addressComponent']['city']
 return result