An attack with magnitude M will be successful with a chance of (100-M)%. That is, higher magnitude means higher risk of missing it. For instance, if M is 30, the chance of succeeding would be 70%, whereas, if M is 10, the chance of succeeding would be 90%. If an attack with magnitude M is successful, the attacked hero’s health points will decrease by M. If the user writes more than 50 or less than 1, the game should warn the player, and re-ask for another attack magnitude as below.

import random  # ---  char1 = raw_input("Player One: ")  while char1 == "":     char1 = raw_input("Please enter your name: ")  char2 = raw_input("Player two: ") while char2 == char1:     char2 = raw_input(char1 + " name is taken, please choose another name: ") while char2 == "":     char2 = raw_input("Please enter your name: ") print char1, "and", char2, "welcome to the game."  # ---  health1 = 50 health2 = 50  print char1, '|' * health1 print char2, '|' * health2  toss = random.randint(0, 1)  if toss == 0:     print char1, "will start the game" else:     print char2, "will start the game"  # ---  while health1 > 0 and health2 > 0:     if toss == 0:         n = input(char1 + " select n force: ")         health2 -= n         print char2, '|' * health2 + char1,'|' * health1         toss = 1 # change player     else:         n = input(char2 + " select n force: ")         health1 -= n         print char1, '|' * health1 + char2,'|' * health2         toss = 0 # change player  # ---  if health1 > 0:     print char2, 'wins' else:     print char1, 'wins'