python - 在python中如何比较两个列表，我们可以不区分大小写？

Question

如果 current_users 中存在“Maurya”，则不应接受“MAURYA”作为可用用户名。

current_users = ["amit", "ajit", "nishant", "mohit", "Maurya"]
new_users = ["deepak", "manish", "maurya", "akhil", "ajit"]

for new_user in new_users:
    if new_user in current_users:
        print(f"{new_user}, you need to enter new username!")
    else:
        print(f"{new_user}, This username is available.")

标签： pythonfor-loopif-statement

Answer 1

for new_user in new_users:
    for current_user in current_users:
        if new_user.lower() == current_user.lower():
            print('new user {} allready present'.format(new_user))