Includes post usability testing changes: Adds introduction at start Makes feedback messages clearer regarding wins and losses

Lucky_Unicorn_v2.py

"""Lucky Unicorn - fully working program, combining all 4 components v2
Includes post usability testing changes:
Adds introduction at start
Makes feedback messages clearer regarding wins and losses
Created by Nathan Smith
28/06/21
"""

import random


# Integer checking function
def intcheck(question, low, high):
    valid = False
    while not valid:
        error = "Whoops! Please enter an integer between {} " \
                "and {}".format(low, high)
        try:
            response = int(input(question.format(low, high)))
            if low <= response <= high:
                return response
            else:
                print(error)
                print()

        except ValueError:
            print(error)


# Main routine goes here

# Introduction and instructions
print("*** Welcome to the Lucky Unicorn Game ***")
print()
print("To play, enter an amount of money between $1 a"
      "nd $10 (whole dollars only).")
print("\nEach round costs $1")
print("\nPayouts:")
print("\tUnicorn: $5.00")
print("\tHorse or Zebra: $0.50")
print("\tDonkey: $0.00")
print()
# Constant values
UNICORN_PAYOUT = 5
HORSE_ZEBRA_PAYOUT = 0.5
GAME_FEE = 1
MAX_AMOUNT = 10

# Ask how much the user wants to play with (minimum $1, maximum $10)
user_balance = intcheck("How much money would you like to play"
                        " with? ", GAME_FEE, MAX_AMOUNT)
keep_playing = ""
while not keep_playing:
    # Balancing the odds - now only a 1/10 chance of getting a unicorn
    options = ['donkey', 'donkey', 'donkey', 'zebra', 'zebra', 'zebra',
               'horse', 'horse', 'horse', 'unicorn']

    # Generate random choice of token from list
    option = random.choice(options)
    print("\nYou got a {}".format(option))

    # Adjust user_balance correctly for given token
    if option == "unicorn":
        user_balance += 4
        print("Congratulations, you won ${:.2f}".format(UNICORN_PAYOUT))
    elif option == "horse" or option == "zebra":
        user_balance -= 0.5
        print("Congratulations, you won ${:.2f}".format(HORSE_ZEBRA_PAYOUT))
    else:
        user_balance -= 1
        print("Sorry, you did not win anything this round")
    # Check and report user_balance, giving option to play again if at least $1
    if user_balance >= GAME_FEE:
        print("You have ${:.2f} left to play with\n".format(user_balance))
        keep_playing = input("Press <enter> to play another round o"
                             "r 'q' + <enter> to quit: ")
    else:
        print("and do not have enough credit for another round.")
        keep_playing = "q"

# Farewells user at the end of the game
print("\nYou are leaving with a balance of ${:.2f}\nThanks for play"
      "ing, Goodbye.".format(user_balance))