#encoding:UTF-8#Python 3.4.3import urllibimport requestsdef get_info():    city=input('请输入要查询的城市名称：')    url='http://gc.ditu.aliyun.com/geocoding?a='+urllib.parse.quote(city)    weather_data = urllib.request.urlopen(url).read()    weather_data =eval(weather_data.decode('ascii'))    print('城市:',city)    print('经度:',weather_data.get('lon'))    print('纬度:',weather_data.get('lat'))    f=open('info.txt','a')    f.writelines(str(city)+'  ')    f.writelines(str(weather_data.get('lon'))+'  ')    f.writelines(str(weather_data.get('lat'))+'  ')    f.writelines("\n")    f.close()get_info()while 1:    choise = input('是否继续查询，是/否：').lower()    if choise == "yes":        get_info()    elif choise == "no":        break    else:        print ('enter "yes" or "no"')        continue