题解 | #禁止重复注册#
禁止重复注册
https://www.nowcoder.com/practice/43acd439112c4b85a9168ad3dd7e2bd1
current_users = ['Niuniu','Ninmei','GURR','LOLO'] new_users = ['GurR','Niu Ke Le','LoLo','Tuo Rui Chi'] number = 0 for x in range(len(new_users)): for y in range(len(current_users)): if new_users[x].lower() == current_users[y].lower(): number = 1 break else: number = 2 continue if number == 2: print("Congratulations, the user name " + new_users[x] + " is available!") if number == 1: print("The user name " + new_users[x] + " has already been registered! Please change it and try again!")