slotmachine.py

import random, time, sys

class fruit():

    #Creating variables at start of game
    def __init__(self):
        
        self.credit = 1.0
        self.results = ["Cherry","Bell","Lemon","Orange","Star","Skull"]
        self.play = True
        self.choice = ""
        self.lost = False

    #Clears spin array and fills it with three randomly selected options from the results array, also reduces credit value
    def roll(self):

        self.spin = []
        self.credit -= 0.2
        self.credit = round(self.credit, 2)

        waste = input("Press ENTER to spin")

        for i in range(3):
            self.spin.append(random.choice(self.results))
        print(self.spin)
        print("")
        self.spin.sort()

        self.again()
    
    #Checks the results of spins and updates the players credit
    def check(self):

        if all(x == spin[0] for x in spin):
            
            if spin[0] == "Bell":

                print("You won £5 credit!")
                self.credit += 5.0

            elif spin[0] == "Skull":

                player.lost = True

            else:

                print("You won £1 credit!")
                self.credit += 1.0

        elif ((spin[0] == spin[1]) or (spin[1] == spin[2])) and spin[1] != "Skull":

            print("You won £0.5 credit!")
            self.credit += 0.5

        elif ((spin[0] == spin[1]) or (spin[1] == spin[2])) and spin[1] == "Skull":

            print("You lose £1 credit!")
            self.credit -= 1.0

        else:

            pass
        
    #Checks if user wants to play again
    def again(self):
        
        if self.lost == False:

            print("Credit: £" + str(self.credit))
            self.choice = input("Do you want to play again? (yes/no) ").lower()
            print("")

            if self.choice == "no" or self.choice == "n":
                
                self.play = False
                
                print("Thank you for playing!")
                print("Your final credit was a total of: £" + str(self.credit) + "\n")

            elif self.choice == "yes" or self.choice == "y":

                self.play = True

            else:

                print("Invalid input please try again.")
                self.again()

        else:

            self.choice = input("You lost! Do you want to start again? (yes/no) ").lower()
            print("")
            
            if self.choice == "yes" or self.choice == "y":

                print("<--- New Game --->\n")
                fruit.script()

            else:

                print("Thank you for playing!")
                sys.exit()
    
    #Method to make the game run
    def script():

        player = fruit()

        print("Welcome to fruit machine!\n")

        while player.play == True:

            if player.credit >= 0.2:

                player.roll()

            else:

                player.lost = True
                
                print("You are out of credit!\n")
                player.again()

fruit.script()

Made a small change so you can type in y and n instead of the full yes/no