milestone_4.py

import random
# class definition for hangman
class Hangman:
    # hangman constructor
    def __init__ (self, word_list, num_lives=5):
        # attributes
        self.word = random.choice(word_list)
        self.word_guessed = ['_' for _ in self.word]
        self.num_letters = len(set(self.word))
        self.word_list = word_list    
        self.num_lives = num_lives
        self.list_of_guesses = []
    
    # methods
    def check_guess(self, guess):
        guess = guess.lower()
        if guess in self.word:
            print(f'Good guess! {guess} is in the word.')
            for i in range(len(self.word)):
                if self.word[i] == guess:
                    self.word_guessed[i] = guess
            self.num_letters -= 1
        else:
            self.num_lives -= 1
            print(f'Sorry, {guess} is not in the word')
            print(f'You have {self.num_lives} lives left')
    def ask_for_input(self):
        while True:
            guess = input('Guess a single letter: ')
            if not (len(guess) == 1 and guess.isalpha()):
                print("Invalid letter. Please, enter a single alphabetical character.")
            elif guess in self.list_of_guesses:
                print("You already tried that letter!")
            else:
                self.check_guess(guess)
                self.list_of_guesses.append(guess)
    
# test the code
hangman = Hangman(['apple', 'banana', 'cherry'])
hangman.ask_for_input()