# awk emulation (column extraction)

for val in [line.split()[6] for line in open('input.txt')]:
    print val



# same, but more explicit
print '+' * 40


col7 = []
for line in open('input.txt'):
    cols = line.split()
    col7.append(cols[6])
for item in col7:
    print item



# reusable function
print '+' * 40


def awker(file, col):
    return [line.rstrip().split()[col-1] for line in open(file)]

print awker('input.txt', 7)
print ','.join(awker('input.txt', 7))