import sys survey_list=['Niumei','Niu Ke Le','GURR','LOLO'] result_dict={ 'Niumei': 'Nowcoder', 'GURR': 'HUAWEI' } for i in survey_list: if i in result_dict.keys(): print('Hi, {}! Thank you for participating in our graduation survey!'.format(i)) else: print('Hi, {}! Could you take part in our graduation survey?'.format(i))