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']
lowercurrent_users=[]
new_users=['GurR','Niu Ke Le','LoLo','Tuo Rui Chi']
lowercurrent_users=list(map(str.lower,current_users))
for i in new_users:
if i.lower() in lowercurrent_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!')
