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# Capitalism The Game Step 2

Really stuck. I feel like I need to add the second die. Not sure though.

hands.py
```from dice import D6

class Hand(list):
def __init__(self, size=0, die_class=None, *args, **kwargs):
if not die_class:
raise ValueError("You must provide a die class")
super().__init__()

for _ in range(size):
self.append(die_class())
self.sort()

def _by_value(self, value):
dice = []
for die in self:
if die == value:
dice.append(die)
return dice

class CapitalismHand(Hand):
def __init__(self):
super().__init__(size=2, die_class=D6)

@property
def doubles(self):
hand = []
if hand[0] == hand[1]:
return True
if hand[0] != hand[1]:
return False

@property
def ones(self):
return self._by_value(1)

@property
def twos(self):
return self._by_value(2)

@property
def threes(self):
return self._by_value(3)

@property
def fours(self):
return self._by_value(4)

@property
def fives(self):
return self._by_value(5)

@property
def sixes(self):
return self._by_value(6)

@property
def _sets(self):
return {
1: len(self.ones),
2: len(self.twos),
3: len(self.threes),
4: len(self.fours),
5: len(self.fives),
6: len(self.sixes)
}
```

Nevermind, figure it out.

```    @property
def doubles(self):
if self[0] == self[1]:
return True
if self[0] != self[1]:
return False
```

I have a follow-up question to this, why do we use if self[0] == self[1] ? why didn't we use hand[0]...? What does self mean in this example ? why didn't the first code you wrote above work ?

Eldin Guzin, `self` refers to the current class instance. The original code does work because `hand` is defined as an empty list that has none of the properties or methods found in a `Hand` instance.

The method code is running βinsideβ the class. It does not have a way to reference its instance name. That is, it does not know the name of its variable label (βhandβ, in this case). βselfβ is a label that is used to point to the same thing as the unknowable variable label points to.

Post back if you need more help. Good luck!!!

MOD

Get job figuring it out. As an additional tip, you can replace:

```if cond:
return True
else not cond:
return False
```

with the preferred style:

```return cond
```

Aww, that's much more simple/beautiful. Appreciate the additional input. :D

Why would self.dice not work the same? The dice list is created/updated as an attribute in the class through the _by_value method, isn't it?

Spencer Hurrle, in the method `_by_value`, the list label `dice` is a variable local to the method and is not accessible outside the method. That is, the attribute `self.dice` is undefined.