gistfile1.py

#!/usr/bin/env python2
# Written by Alexogo and rHermes

print('Welcome to the QSL Login site, please enter your credentials.')


#TODO: Hash these passwords, as this could be read straight from memory.
logins = {
    "QSL Alexogo": "Test01",
    "QSL Viper":   "Test02",
    "QSL Kharazs": "Test03",
    "QSL Amumund": "Test04",
    "QSL Zettern": "Test05",
    "QSL Scourge": "Test06",
    "ST Maikrov":  "Test07",
}

# Password loop
while(True):
    username = raw_input("Username: ")
    password = raw_input("Password: ")

    # dict.get() has default=None as standard, but this script is for learning.
    if logins.get(username, None) == password:
        print("Logged in Successfully as {0}".format(username))
        
        while(True):
            command = raw_input("{0} # ".format(username))
            # We don't have a sense of capital letters when it comes to exiting.
            if command.lower() == "exit":
                print("Logging out.")
                break
            else:
                print("'{0}' is not a valid command!".format(command))

    else:
        print("Invalid Credentials.")