Print Page Time Load from HAR parser

#!/usr/bin/env python
# coding: utf-8

import sys
import json
import glob

def parse_har(jhar):
    row = []
    for p in jhar['log']['pages']:
        # row.append(p['pageTimings']['onContentLoad'])
        row.append(p['pageTimings']['onLoad'])
    return row


if __name__ == '__main__':
    rows = []
    for arg in sys.argv[1:]:
        hars = glob.glob(arg)
        for h in hars:
            fh = open(h, 'r')
            jhar = json.load(fh)
            fh.close()
            row = parse_har(jhar)
            rows.append(row)
    out = ''
    for row in rows:
        for v in row:
            out += str(v) + ','
    print out