The Unbreakable Program 1.0

def getstring_length():
        """ A function that checks whether the user has entered in a 3 character long string.
              A valid string is returned
        """
        answer = input("Please enter a string with 3 characters > ")
        while len(answer) !=3:
          answer = input("You have entered an incorrect string, please enter again > ")

        return answer
#_____________________________________

def getstring_in_list():
        """ A function that checks to see if the user has entered in a valid option
            from a list. A valid string is returned
        """
        validList = ["N","n","No","no"]
        answer = input("Please enter in 'no' to continue > ")
        while answer not in validList:
          answer = input("You have entered an invalid option, please enter in 'no'")

        return answer
#_____________________________________

def getstring_is_digit():
        """A function that checks if the user has entered a an integer. A valid string is returned
        """
        answer = input("Please enter an integer > ")
        while not answer.isdigit():
          answer = input("You have not entered an integer value, please try again > ")

        return int(answer)

#_____________________________________

def getstring_in_range():
        """ A function that checks if an entered number is between 1 and 100. A valid string is returned.
        """
        answer = input("Please enter a number between 1 and 100 ->")

        while int(answer) not in range(1,101):      #setting the range
            print("You have entered in an incorrect number")
            answer = input("Please enter a number between 1 and 100 -> ")

        return answer

#_____________________________________

def getstring_is_alpha():
    """ A function that checks whether a string entered is just one word. A valid string is returned
    """

    answer = input("Please enter an single word -> ")

    while not answer.isalpha():
        print("You have entered an invalid quantity of words")
        answer = input("please enter a single word -> ")

    return answer
#_____________________________________

def getstring_exist():
    """ A function which checks whether you have entered something or not, valid string is returned
    """
    answer = input("Please enter your name -> ")

    while answer == "":
        print("I'm sorry, i didn't catch that.")
        asnwer = input("Please enter your name -> ")

    return answer

#_____________________________________

# Main Program
print("Welcome to the unbreakable program")
ans1 = getstring_length()
print("You have managed to enter in the 3 character length string: {0}\n".format(ans1))

ans2 = getstring_in_list()
print("You have managed to type {0} to be able to continue with this program\n".format(ans2))

ans3 = getstring_is_digit()
print("You have entered in the valid number: {0}".format(ans3))

ans4 = getstring_in_range()
print("You have managed to enter the number {0} which is between 1 and 100\n".format(ans4))

ans5 = getstring_is_alpha()
print("You have managed to enter in the valid word: {0}".format(ans5))

ans6 = getstring_exist()
print("Existence accepted - You have enter {0} to prove existance".format(ans6))



print("Well done, you have made it through the unbreakable program")