from random import randint
 
class Character_1:
    def __init__(self,char):
        self.char = char
        self.gold = 0
        self.level = 1
        self.attack = 7
 
    def doAttack(self):
        # get a damage amount ranging from half
        # the attack value, up to the attack value
        # note that 'minimum' is integer division, so it'll truncate,
        # i.e. 7 / 2 = 3  (it cuts off the decimal part)
        minimum = self.attack / 2
        maximum = self.attack
        damage = randint(minimum, maximum)
        return damage

from random import randint
 
 
class Character_1:
 
    def __init__(self,char):
        self.char = char
        self.gold = 150
        self.level = 1
        self.attack = 4
        self.defend = 6
 
    def Level_Up(self,x):
        player.level = player.level + 1
        player.gold = player.gold + 125
        player.attack = player.attack + 2
        player.defend = player.defend + 1
        if player.Level_Up >= 1:
            print 'Level:',
            print player.level
            print 'Gold:',
            print player.gold
            print 'Attack',
            print player.attack
            print 'Defend:',
            print player.defend
 
 
    def doAttack(self):
        player.attack
 
 
player = Character_1('Serf')
 
player.level
print 'Serf Character:'
print 'Gold:',
print player.gold
print 'Level:',
print player.level
print 'Attack:',
print player.attack
print 'Defence:',
print player.defend

def Level_Up(self, x):
        self.level += 1
        self.gold += 125
        self.attack += 2
        self.defend += 1
        if self.level >= 1:
            print 'Level:',
            print self.level
            print 'Gold:',
            print self.gold
            print 'Attack',
            print self.attack
            print 'Defend:',
            print self.defend

class MainMenu(object):
    def __init__(self):
        # do your stuff here
    def askWhichClass(self):
        choice = raw_input("Which class?  ")
        return choice
 
# define your player classes here...
 
mm = MainMenu()
choice = mm.askWhichClass()
if choice == 'serf':
    player = PlayerSerf()
elif choice == 'baron':
    player = PlayerBaron()
# etc...

class MainMenu(object):
    def __init__(self):
        # do your stuff here
    def askWhichClass(self):
        # available options in a list
        options = ['serf', 'baron']
        while True:
            choice = raw_input("Which class?  ")
            # check if the choice is in the options list
            # (convert to all lowercase first to allow for case-insensitive input)
 
            # if so, return the choice (which also breaks the while loop)
            if choice.lower() in options:
                return choice
           # if not, don't break out of the loop,
           # so that it regathers input until it gets a valid choice
           else:
                print 'Invalid choice!'