Cloud Functions "finished" log-line parser

parse.py

#!/usr/bin/env python2

import re
import sys

# Parse Log lines of the form: "2017-12-17T16:00:00.000000000Z	Function execution took X ms, finished with status code: YYY"
TIMESTAMP = "(?P<timestamp>20[1-2][0-9]-[0-1][0-9]-[0-3][0-9]T[012][0-9]:[0-6][0-9]:[0-6][0-9].[0-9]{9}Z)"
DURATION = "(?P<duration>[0-9]+)"
UNITS = "(?P<units>[m]+s)"
CODE = "(?P<code>[234][0-9]{2})"

REGEX = "^{timestamp}\tFunction execution took {duration} {units}, finished with status code: {code}".format(
    timestamp=TIMESTAMP,
    duration=DURATION,
    units=UNITS,
    code=CODE
)
LOGRE = re.compile(REGEX)

for line in sys.stdin:
    found = LOGRE.match(line)
    if found is not None:
        value = found.groupdict()
        #print ("{}: {}{}".format(value["code"],value["duration"],value["units"]))
        if (value["code"] == "200") and  (value["units"] == "ms"):
            print(value["duration"])