import random

class GuessNumber():
    def __init__(self, number, mn=0, mx=100):
        self.guesses = 0
        self.number = number
        self.min = mn
        self.max = mx

    def get_guess(self):
        guess = input(f'Guess a number ([{self.min}, {self.max}]): ')

        if self.is_valid_guess(guess):
            return int(guess)
        else:
            print('Please enter a valid number!')
            return self.get_guess()

    def is_valid_guess(self, guess):
        try:
            guess = int(guess)
        except:
            return False

        return self.min <= guess <= self.max

    def play(self):
        while True:
            self.guesses += 1

            guess = self.get_guess()
            
            if guess < self.number:
                print('Your guess was under.')
            elif guess > self.number:
                print('Your guess was over.')
            else: # They guessed it
                break

        print(f'You guessed it in {self.guesses} tries!')