Classes and Functions

[Low_Ki_]

Actually how would I take this block and turn it into a while loop so that users can enter a new name if they choose:

else:
                with open(filename, 'r') as file_obj:
                    names = file_obj.readlines()
                for name in names:
                    if prompt_username.lower() == name.strip().lower():
                        print("Name Taken")
                        break

I experimented already and if I put the while loop inside the for loop and it will allow usernames to be entered twice..