Python

5-10. Checking Usernames: Do the following to create a program that simulates how websites ensure that everyone has a unique username .

Make a list of five or more usernames called current_users .

Make another list of five usernames called new_users . Make sure one or two of the new usernames are also in the current_users list .

Loop through the new_users list to see if each new username has already been used . If it has, print a message that the person will need to enter a new username . If a username has not been used, print a message saying that the username is available .

Make sure your comparison is case insensitive . If 'John' has been used, 'JOHN' should not be accepted .