guess_game.py

low = 0
high = 100

print("Please think of a number between 0 and 100")

while True:
    guess = low + int((high-low)/2)
    print("Is it #{0}?".format(guess))
    answer = input("Enter 'h', 'l, 'c' :")
    if answer is 'h':
        if high - low == 1:
            guess = low
        high = guess
    elif answer is 'l':
        if high - low == 1:
            guess = high
        low = guess
    elif answer is 'c':
        print("Nice!")
        break