PYTHON：AttributeError：'int'对象没有属性'hand'

Question

So I have an exercise on python - building a BlackJack game. I have started with defining how every phrase of the game would go. Now when I run this code below, In case the input is '0' - which means you don't want cards anymore, it runs perfectly. But when the input is '1' - which means you want to pick card, I get an error:

Traceback (most recent call last):
  File "C:/Users/Maymon/PycharmProjects/untitled4/BlackJack.py", line 1, in <module>
    class blackjack(object):
  File "C:/Users/Maymon/PycharmProjects/untitled4/BlackJack.py", line 34, in blackjack
    player(1)
  File "C:/Users/Maymon/PycharmProjects/untitled4/BlackJack.py", line 25, in player
    PickCard(1)
  File "C:/Users/Maymon/PycharmProjects/untitled4/BlackJack.py", line 18, in PickCard
    self.hand+= random.randrange(1, 13)
AttributeError: 'int' object has no attribute 'hand'

The code:

class blackjack(object):

    #this func defines how player should react
    def player(self):

        #this func defines what case of technical loosing
        def loser():
            print("You have reached", hand , ". Which is beyond 21. Therefor, you have lost the game. Better luck next time!")


        #this func is responsible for picking card issue.
        def PickCard(self):
            import random
            x=1
            while x == 1:
                pick = int(raw_input("Enter 1 if you want another card, else Enter 0"))
                if pick == 1:
                    self.hand = self.hand + random.randrange(1, 13)
                else:
                    x=0
        import random
        print "Now your first card will automatically be given to you:"
        hand=random.randrange(1,13)
        print "hand: ", hand
        PickCard(1)
        print hand
        if hand>21:
            loser()
        elif hand==21:
            pass
        else:
            pass

    player(1)

Thanks in advance.

Answer 1

You are making the function call as player(1) where the player function expects the argument as of self type .ie instance of the class blackjack . Hence, while doing self.hand = self.hand + random.randrange(1, 13) it is throwing the above mentioned error.

---

I think you do not want to make a call to player() function from within the class, Is it? Move that part to outside the class. Firstly create the object of class blackjack (Note: In Python, class names should be defined as CamelCase variables like: BlackJack). For example:

blackjack_obj = blackjack()

Then call the player() function as:

blackjack_obj.player()