# stock.py

from structly import *

class Stock(Structure):
    name = String()
    shares = PositiveInteger()
    price = PositiveFloat()
    
    @property
    def cost(self):
        return self.shares * self.price

    def sell(self, nshares: PositiveInteger):
        self.shares -= nshares

if __name__ == '__main__':
    portfolio = read_csv_as_instances('../../Data/portfolio.csv', Stock)
    formatter = create_formatter('text')
    print_table(portfolio, ['name','shares','price'], formatter)