Roshambo with only 1 if switch

[Clunk_Head]

Trying to learn more pythonic ways of doing things.
How'd I do? Any suggestions welcome, please.

import random
combinations = {"Paper":    {"Rock": "Win",
                             "Paper": "Draw",
                             "Scissors": "Lose"},
                "Rock":     {"Paper": "Lose",
                             "Rock": "Draw",
                             "Scissors": "Win"},
                "Scissors": {"Paper": "Win",
                             "Scissors": "Draw",
                             "Rock": "Lose"}
                }
scoring = {"Win": 1, "Draw": 0, "Lose": -1}
user_choice = ""
score = 0
while user_choice.title() != "Quit":
    print("\nPaper, Rock, Scissors, or Quit")
    user_choice = input("Please enter your choice: ").title()
    computer_choice = list(combinations)[random.randint(0, 2)]
    try:
        result = combinations[user_choice][computer_choice]
        score += scoring[result]
        print("Your choice %s: Computer choice %s: You %s: Your Score %d" %
              (user_choice, computer_choice, result, score))        
    except:
        if user_choice == "Quit":
            print("Final score: %d" % score)
        else:
            print("Invalid Entry")  
input()