题解 | #禁止重复注册#
禁止重复注册
https://www.nowcoder.com/practice/43acd439112c4b85a9168ad3dd7e2bd1
#!/usr/local/bin/python3
#禁止重复注册
current_users = ['Niuniu','GURR','LOLO']
new_users = ['GurR','Niu Ke Le','LoLo','Tuo Rui Chi']
current_users_L = [i.lower() for i in current_users ]
for i in new_users:
if i.lower() in current_users_L:
print('The user name %s has already been registered! Please change it and try again!'%i)
else:
print('Congratulations, the user name {} is available!'.format(i))
学习使用了 {}.format（） 