怎么写才能在比较时候不区分大小写？Lion和liON不区分大小写对比，并打印出已被占用。

current_users = ['Tifa', 'Ada', 'Lightning', 'Lion', 'Natasha']

new_users = ['Tifa', 'Ada', 'Lucifer', 'liON', 'Michael']

#下面是我写的代码,该如何在用户名为liON时打印出'Username is uese'？

for new_user in new_users:

print(new_user)

if new_user in current_users:

print('Username is uesd')

else:

print('Username is not used')

Good丶study

2017-12-12

源自：初识Python 5-3

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java_php 回答被采纳 +2 积分
2017-12-12

全部转为大写或者全部转为小写再对比

0 回复有任何疑惑可以回复我~

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qq_33_15
2017-12-12

current_users = ['Tifa', 'Ada', 'Lightning', 'Lion', 'Natasha']

new_users = ['Tifa', 'Ada', 'Lucifer', 'liON', 'Michael']

for new_user in new_users:
print(new_user)
if new_user.lower().title() in current_users:
print('Username is uesd')
else:
print('Username is not used')