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# pcost.py

import report

def portfolio_cost(filename):

'''

Computes the total cost (shares*price) of a portfolio file

'''

portfolio = report.read_portfolio(filename)

return portfolio.total_cost

def main(args):

if len(args) != 2:

raise SystemExit('Usage: %s portfoliofile' % args[0])

filename = args[1]

print('Total cost:', portfolio_cost(filename))

if __name__ == '__main__':

import sys

main(sys.argv)