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:
po = i.upper()
if po 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 {po.title()} is available!")
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