import random
onward = "\n..."
boss_hp = 20
player_hp = 10
num_lines = 100

Turn = True

while Turn:
    action_play = input("Choose an action(attack or run): ")
    if action_play == "attack":
        player_atk = random.randint(3, 5)
        damage = player_atk
        boss_hp = boss_hp - damage
        print("\nYou did %d damage!\nBoss HP is now %d!" % (damage, boss_hp))
        if damage == 5:
            print(' CRITICAL!')
        if boss_hp <= 0:
            print("The Boss is Dead!\nYou Win!!")
            break
        print("\nBoss Attacks!")
        boss_atk = random.randint(1, 3)
        boss_damage = boss_atk
        player_hp = player_hp - boss_damage
        print("Ouch! You took %d damage! You now have %d HP!" % (boss_damage, player_hp))
    if player_hp <= 0:
        print("YOU DIED!")
        break
    if action_play == "run":
        print("You ran away...")
        break
    input(onward)