parse_bi_list.py

#!/usr/bin/env python

import sys
import simplejson as json

obj=json.load(sys.stdin)

itemcount=0
sizesum=0
accountsizesum=0

for item in obj:
    itemcount+=1
    sizesum+=item['entry']['meta']['size']
    accountsizesum+=item['entry']['meta']['accounted_size']


print "Items:\t{0:d}\nSize:\t{1:d}\nASize:\t{2:d}\n".format(itemcount,sizesum,accountsizesum)