Method __init__

Solutions/7_5/mymeta.py:15–18

(self,name,shares,price)

class Stock(myobject):
    def __init__(self,name,shares,price):
        self.name = name
        self.shares = shares
        self.price = price
    def cost(self):
        return self.shares*self.price
    def sell(self,nshares):