gistfile1.txt

#!/usr/bin/env python

import sys
import shlex
import csv

keys_of_interest = ['build_id','product','release', 'platform']

releases = []
for line in sys.stdin.read().split('\n'):
    r = {}
    for arg in shlex.split(line):
        if '=' in arg:
            (key, value) = arg.split('=', 1)
            if key in keys_of_interest:
                r[key] = value
    if r != {}:
        releases.append(r)


output = csv.DictWriter(sys.stdout, fieldnames=keys_of_interest)
output.writeheader()
for r in releases:
    output.writerow(r)