Pythong Basic Game

import random

class Character(object):
    def __init__(self, name, level):
        self.name = name
        self.level = level
        self.health = int(level + 5 ** 2) # if level is'nt number this will throw

    def damage(self, dmg):
        block = self.block()
        if dmg-block < 0:
            dmg = 0
        else:
            dmg = dmg - block

        self.health - dmg
        if self.health <= 0:
           print("%s has died!" % self.name)
           return 1
        else:
           print("%s has lost %i health!" % (self.name, dmg))
           return 0

    def block(self):
        rand = random.randint(0,100)
        if rand % 5 == 0 and rand % 2 == 0:
            return int(self.level / 2 * 1.5 /3)
        return 0

    def attack(self):
        dmg = 0
        rand = random.randint(0, 100)
        if rand % 5 == 0:
            dmg = self.level/4 * 1.5
            print("Attack Successful!")
        return dmg

def win(char1, char2):
    if(char1.health > char2.health):
        winner = char1.name
    else:
        winner = char2.name
    print("%s has won" % winner)

vilan = Character("Megaman", 13) # :)
hero = Character("Metroman", 20)
h = 0
v = 0

def fight(char1, char2):
    i = 0
    j = 0
    while j != 1 and i != 1:
        i = char1.damage(vilan.attack())
        j = char2.damage(hero.attack())
    win(char1, char2) #Ivandro Ismael

fight(vilan, hero)
#input() #wait here