parse the ouput of the condor_status command

test_parse_output.py

from fn.monad import Option
from toolz.itertoolz import get

example1 = '''Name               OpSys      Arch   State     Activity LoadAv Mem   ActvtyTime

gce-xxxxx    LINUX      X86_64 Unclaimed Idle      0.010 3700  0+00:00:02
gce-xxxx    LINUX      X86_64 Unclaimed Idle      0.000 3700  0+00:00:02
                     Total Owner Claimed Unclaimed Matched Preempting Backfill

        X86_64/LINUX     2     0       0         2       0          0        0

               Total     2     0       0         2       0          0        0'''


def parse_int_from_stdout(output):
    return Option(output)\
        .filter(lambda s: s.strip() != '')\
        .map(lambda s: s.split('\n'))\
        .map(lambda lines: get(-1, lines, None))\
        .map(lambda s: get(1, s.split(), None))\
        .map(lambda s: int(s))\
        .get_or(0)


def test_examples():
    '''
    These examples parse an example string for the integer value of Total
    If Total is not present, 0 is returned
    '''
    
    assert parse_int_from_stdout(example1) == 2

    assert parse_int_from_stdout('\n') == 0

    assert parse_int_from_stdout('') == 0