Rock Paper Scissor Lizard Spock

game_rpsls.py

import random

class Characters():
    def __init__(self, weight, player, winphrase, losephrase):
        self.weight = weight
        self.player = player
        self.winphrase = winphrase
        self.losephrase = losephrase
    
    def __str__(self):
        return str(self.__dict__)

choice1 = Characters(1, "Rock", "crushes","crushes")
choice2 = Characters(2, "Paper", "covers","disproves")
choice3 = Characters(3, "Lizard", "eats","poisons")
choice4 = Characters(4, "Spock", "vaporizes", "smashes")
choice5 = Characters(5, "Scissor", "cuts","decpitates")

choices = [choice1, choice2, choice3, choice4, choice5]

#NPC Character variables
npc_choice = vars(random.choice(choices))
print(npc_choice)
npc_weight = npc_choice['weight']
npc_player = npc_choice['player']
npc_winphrase = npc_choice['winphrase']
npc_losephrase = npc_choice['losephrase']

#Player character variables

character = "Demon"


print("-----------------")
print("1.  Rock")
print("2.  Paper")
print("3.  Lizard")
print("4.  Spock")
print("5.  Scissor")
print("6.  Quit")
print("-----------------")
character = input("Pick a  number? ")

if character == "1":
    character = vars(choice1)
elif  character == "2":
    character = vars(choice2)
elif  character == "3":
    character = vars(choice3)
elif  character == "4":
    character = vars(choice4)
elif  character == "5":
    character = vars(choice5)
elif  character == "6":
    print("Game Over")
else :
    print('player error')


char_weight = character['weight']
char_player = character['player']
char_winphrase = character['winphrase']
char_losephrase = character['losephrase']


print("You Picked: " + char_player)


print("Opposed by.. " + npc_player)

def rpsls(char_weight, npc_weight, char_player, npc_player, char_winphrase, npc_winphrase, char_losephrase, npc_losephrase):
    
    diff = (char_weight - npc_weight)%5
    
    if diff == 0:
        print ("It's a draw")
    elif diff >=3:
        if char_weight > npc_weight:
            print (char_player, char_winphrase, npc_player)
        elif char_weight == npc_weight:
            print ("It's a draw")
        else:
            print (npc_player, npc_winphrase, char_player)

    elif diff <=2:
        if char_weight < npc_weight:
            print (char_player, char_losephrase, npc_player)
        elif char_weight == npc_weight:
            print ("It's a draw")
        else:
            print (npc_player, npc_losephrase, char_player)
    else:
        print ('Something went wrong')

rpsls(char_weight, npc_weight, char_player, npc_player, char_winphrase, npc_winphrase, char_losephrase, npc_losephrase)

How come when you get lizard and the CPU gets Rock, "The rock crushes the Lizard". And when you que Rock and CPU Lizard, "The Lizard eats the Rock" ?

Isn't it supposed to be just:

diff = char_weight - npc_weight
if diff ==0: "It is draw"
elif diff>0: "It is win"
else : "it is lost"