2-1.py

import sys

from collections import namedtuple


RightRectPrism = namedtuple('RightRectPrism', ('l', 'w', 'h'))


def parse_prism(s):
    return RightRectPrism(*map(int, s.strip().split('x')))


def wrapping_area(prism):
    sides = [prism.l * prism.w,
             prism.w * prism.h,
             prism.h * prism.l]
    smallest = min(sides)
    return sum(map(lambda x: 2 * x, sides)) + smallest


def main(args=()):
    total = 0
    with open('2-1.txt') as f:
        for line in f.readlines():
            prism = parse_prism(line)
            total += wrapping_area(prism)
    print('They should order: %d' % total)


if __name__ == '__main__':
    sys.exit(main(sys.argv))