A simple program in which user assumes a number between 0 and 100 and computer tries to guess it. When it guesses the number correctly, we display how many tries it took to reach the correct answer.

guess_the_number.py

import random

lower_bound = 0
upper_bound = 100
random_number = int
guess_count = 1

print('Think of a number between 0-100 in your head, and I will try to guess it.')
print('Enter C for correct, L if it is lower and H if it is higher.')

def generate_random():
    try:
        return random.randint(lower_bound, upper_bound)
    except ValueError:
        print("ERROR")
        quit()

while True:
    random_number = generate_random()
    user_response = input('Is it {}? C|L|H: '.format(random_number)).upper()

    if user_response == 'C':
        print('Yay, I guessed it in {} attempt(s).'.format(guess_count))
        break

    elif user_response == 'L':
        lower_bound = random_number + 1
        guess_count += 1

    elif user_response == 'H':
        upper_bound = random_number - 1
        guess_count += 1