Number Guessing Game (Reverse Ver.) + Questions

import random
import time                             # Tools import.

def play_again():                        
    again = input("Play again? (Y/N) :")
    if again == "Y":
        print(" ")
        print("Loading...")
        time_sleep(2)
        start_game()
    else:
        print(" ")
        print("Thank You for Playing! by: Jackson Lai (r37rouv33)")
        print(" ")
        raise SystemExit()              # I was using (break) in here and I've got an error called "break outside loop". 
                                        # After some Googling I found that (break) just can apply on (for) or (while). hahaha I am such a noob. 


def start_game():

    print('***************** "Human VS Computer" Number Guessing Game *****************')     # Some greetings and setup for the player.
    print(" ")                                                                 # I am wondering are there any method to make them nice and clean? except puting print(" ")
    print("HELLO HUMAN!")
    print(" ")
    time.sleep(1)
    print("Before we start the game, you have to set up few rules...") 
    print(" ")
    try:
        a = int(input("What is the lowest range you would like me to guess? : "))   # I would like the player set up there own range and life chance.
        print(" ")
        b = int(input("What is the highest range you would like me to guess? : "))  
        print(" ")
        guess_chance = int(input("How many chances would you like to give me? : "))  # In here you could use negative numbers too :DDD
    except ValueError:
        print(" ")
        print("############ Your input is not an integer... Please don't this again! ############")
        print(" ")
        print("Game Restart....")
        print(" ")
        time.sleep(2)
        start_game()
    else:
        print(" ")
        print("PLEASE BE FOCUS ON THE NUMBER YOU PICKED... I AM GOING INTO YOUR MIND...")
        time.sleep(2)
        print(" ")
        computer_guess = random.randint(a, b)    

    while guess_chance > 0:
        print("Loading....")
        print(" ")
        time.sleep(2)
        print("UHHMMM....MAYBE IT IS {} ?".format(computer_guess))        
        print(" ")
        time.sleep(1)
        print("AM I RIGHT? (attempt remain: {})".format(guess_chance))
        print(" ")
        print("If I am correct type (Y)")
        print("If the number is higher than my guess type (H), if it's lower, type (L)")
        print(" ")
        my_answer = input("Your answers is? >>>> ")
        print(" ")

        if my_answer == "Y":
            print("HAHHAHAHHA...I WON THE GAME!! I COULD READ YOUR MIND!!!!")
            print(" ")
            play_again()

        elif my_answer == "H":
            a = computer_guess + 1                                              # In here if the numbers in your mind is higher than what computer guess
            guess_chance -= 1                                                   # the lower value in the ramdom.randint will be replace by the guessed number
            computer_guess = random.randint(a, b)                               # And (+1) to the guessed number in here,
            print(" ")                                                          # if not it's possible to genarate a repeated number in the next guess.

        elif my_answer == "L":
            b = computer_guess - 1                                              # For same reason I did the samething here but replace the higher value with (-1)
            guess_chance -= 1
            computer_guess = random.randint(a, b)
            print(" ")

        else:
            print("######## You answer is not vaild with my instruction. Please don't this again! ########")
            print(" ")
            time.sleep(2)
            continue

    print("OUT OF CHANCES!!! HUMAN WON.......")
    print(" ")
    play_again()

start_game()