Hello Challenge Part 1

part1.py

import os
import json
import bsddb3 as bsddb

db = bsddb.btopen("users.db")
for filename in os.listdir("."):
    if not filename.endswith("hello.txt"):
        continue

    f = open(filename)
    for line in f:
        date, data = line.strip().split(" HELLO ")
        data = json.loads(data)
        userid = data['userid']
        userid_s = str(userid)
        appversion = data['app_version']
        platform = str(appversion['platform'])
        hw = (data['hardware_version']).encode('utf-8')
        db[userid_s] = "%s,%s" %(platform, hw)

    f.close()

db.close()