import sys

MALE = 0
FEMALE = 1

class Peep:
    self.name
    self.sex
    self.age

def read_file(filename):
    with open(filename) as f:
        for line in f:
            yield [b.strip() for b in line.split(':')]

peeps = []
for l in read_file(sys.argv[1]):
    Peep p
    p.name = l[0]
    p.sex = MALE if l[1] == 'M' else FEMALE
    p.age = int(l[2])
    peeps.append()