Guess my number: try to guess a random number as fast as possible.

guess_my_number.py

"""A game in which the player tries to guess a random number."""

import random


def guess_number():
    """Create variables and run the game loop."""
    number = random.randint(1, 100)
    print("I'm thinking of a number between 1 and 100.")
    print("Can you guess it?")

    guesses = 0
    wrong_numbers = []

    while True:
        guess = ""
        while (
                not guess.isdigit() or
                int(guess) not in range(1, 101) or
                guess in wrong_numbers
        ):
            guess = input("\nYour guess: ").strip()
            if not guess.isdigit() or int(guess) not in range(1, 101):
                print("You have to enter a number between 1 and 100.")
            elif guess in wrong_numbers:
                print(f"You already tried {guess}.")

        guesses += 1
        if guesses == 10:
            print("Let's end this game, you took too long.")
            print(f"My number was {number}.")
            break

        wrong_numbers.append(guess)

        guess = int(guess)
        if guess < number:
            print("That's too low. Try a higher number.")
        elif guess > number:
            print("That's too high. Try a lower number.")
        else:
            print(f"Correct! My number is {number}.")
            print("That took you", end=" ")
            if guesses == 1:
                print("just one guess. VERY impressive!")
            elif guesses <= 5:
                print(f"{guesses} guesses. Well done!")
            else:
                print(f"{guesses} guesses. Not bad.")
            break


def main():
    """The main function of the game."""
    while True:
        guess_number()

        answer = ""
        while answer not in ("y", "n"):
            answer = input("\nPlay again? (y/n) ").strip().lower()
        if answer == "n":
            break
        else:
            print()


if __name__ == "__main__":
    main()