Lizard Spock Extension (of Rock Paper Scissors)

# Rock Paper Scissors with Lizard Spock Extension (but with Wizard in place of Spock)
# By Mike Kerry - Jan 2021  - Email: acclivity2@gmail.com
import random
mydict = {"R": "Rock", "P": "Paper", "S": "Scissors", "L": "Lizard", "W": "Wizard", "Q": "Quit"}
winners = ["RS", "PR", "SP", "LW", "WS", "RL", "SL", "LP", "PW", "WR"]  # winning pairs. Rock beats Scissors etc.
scores = [0,0]                # List for keeping scores
while True:
    comp = random.choice(winners)[0]   # Computer makes a random choice
    while True:
        user = input("=" * 20 + "\nMake your choice, Rock, Paper, Scissors, Lizard or Wizard (initial will do)\ntype Q to quit: ")
        user = user[0].upper()
        if user in mydict:          # Validate user input first letter for R P S L W or Q only
            break
        print("Invalid. Try again")
    if user == "Q":                 # Q = Quit
        break
    print("You chose:", mydict[user], "\nThe computer chose", mydict[comp])
    if comp == user:                # Did the user choose same as computer?
        print("It was a tie!")
    else:
        if comp + user in winners:  # Check for computer winning
            print("You lose!")
            scores[1] += 1          # count 1 computer win
        else:                       # Otherwise user won
            print("You won!")
            scores[0] += 1          # count 1 user win
print("Final scores: (You, computer)", *scores)