Bagels.py

import random

NUM_DIGITS = 3
MAX_GUESSES = 10


def main():
    print('''Bagels: A deductive logic game.
By Al Sweigart al@inventwithpython.com
          
I am thinking of a {}-digit number with no repeated digits.
Try to guess what it is. Here are some clues.
When I say:         That means:
    Pico                One digit is correct but in the wrong position
    Fermi               One digit is correct and in the right position
    Bagels              No digit is correct! 
          
For example: if the secret number was 248 and your guess was 843, the
clues would be Fermi Pico.'''.format(NUM_DIGITS))

    while True: # Main game loop 
        # This stores the secret number the player needs to guess:
        secretNum = getSecretNum()
        print('I have thought up a number.')
        print('You have {} guesses to get it.'.format(MAX_GUESSES))

        numGuesses = 1
        while numGuesses <= MAX_GUESSES:
            guess = ''
            # Keep looping until they enter a valid guess:
            while len(guess) != NUM_DIGITS or not guess.isdecimal():
                print('Guess #{}: '.format(numGuesses))
                guess = input('> ')

            clues = getClues(guess, secretNum)
            print(clues)
            numGuesses += 1

            if guess == secretNum:
                break # They're correct, so break out of this loop
            if numGuesses > MAX_GUESSES:
                print('You ran out of guesses.')
                print('The answer was {}.'.format(secretNum))

        # Ask the player if they want to play again
        print('Do you want to play again? (Yes or No)')
        if not input('> ').lower().startswith('y'):
            break
    print('Thanks for playing!')


def getSecretNum():
    """Returns a string made up of NUM_DIGITS unique random digits"""
    numbers = list('0123456789') # Create a list of digits 0 to 9
    random.shuffle(numbers) # Shuffle them into random order
    
    secretNum = ''
    for i in range(NUM_DIGITS):
        secretNum += str(numbers[i])
    return secretNum

def getClues(guess, secretNum):
    """Returns a string with the Pico, Fermi, Bagels for a guess 
    and secret number pair."""
    if guess == secretNum:
        return 'You got it!'
    
    clues = []

    for i in range(len(guess)):
        if guess[i] == secretNum[i]:
            # A correct digit is in the correct place
            clues.append('Fermi')
        elif guess[i] in secretNum:
            # A correct digit is in the incorrect place
            clues.append('Pico')

    if len(clues) == 0:
        return 'Bagels'
    else:
        # Sort the clues alphebetically so it doesn't give the information away
        clues.sort()
        return ' '.join(clues)
    
if __name__ == '__main__':
    main()