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