users_list = ['Niuniu','Niumei','HR','Niu Ke Le','GURR' , 'LOLO'] #原始列表
#遍历列表
for i in users_list:
    #判断用户名==“HR”
    if i =='HR':
        print('Hi, HR! Would you like to hire someone?')
    else:
        print( 'Hi, %s! Welcome to Nowcoder!' %i)  #格式化字符串