num guesser

#! /usr/bin/env python3


# if anyone actually reads this, thank you for your work!!

epsilon = 1
low = 0
high = 100
ans = ((low + high) // 2)
num = 0


def guess(answer, margin, bottom, top, number):
    stop = False
    while stop == False:
        response = input(
            "Is your secret number {}?\nEnter 'h' to indicate the guess is too high. Enter 'l' to indicate the guess is too low. Enter 'c' to indicate I guessed correctly. ".format(answer))
        if response == 'l':
            bottom = answer
        elif response == 'h':
            top = answer
        elif response == 'c':
            print("Game Over. Your secret number was:", end=' ')
            print(answer)
            stop = True
            break
        else:
            print("I'm sorry, I did not understand your input.")
            continue
        answer = ((top + bottom) // 2)


while not 100 > num > 0:
    try:
        num = int(input("Please think of a number between 0 and 100!"))
    except ValueError:
        print("not a valid input")
        num = 0
        continue

guess(ans, epsilon, low, high, num)