题解 | #禁止重复注册#
禁止重复注册
https://www.nowcoder.com/practice/43acd439112c4b85a9168ad3dd7e2bd1
# 明明就没问题,牛客真是有毛病. # 列表生成式记得常用. """ current_users = ['Niuniu','Niumei','GURR','LOLO'] new_users = ['GurR','Niu Ke Le','LoLo','Tuo Rui Chi'] current_users_up = [i.upper() for i in current_users] for i in new_users: if i.upper() in current_users_up: print('The user name %s has already been registered! Please change it and try again!' % i) else: print('Congratulations, the user name %s Le is available!' % i) """ current_users = ['Niuniu','Niumei','GURR','LOLO'] new_users = ['GurR','Niu Ke Le','LoLo','Tuo Rui Chi'] current_users_up = [i.upper() for i in current_users] for i in new_users: if i.upper() in current_users_up: print('The user name {} has already been registered! Please change it and try again!'.format(i)) else: print('Congratulations, the user name {} is available!'.format(i))