#!/usr/bin/python
"""Find ids in JSON document"""
import sys
try:
    import json
except ImportError:
    import simplejson as json
import optparse
parser = optparse.OptionParser(description=__doc__)
options, args = parser.parse_args()

if not args:
    print "Please supply a filename to process"
    sys.exit(1)

json_data=open(args[0])
data = json.load(json_data)
ids=[]
for i in data:
    id = i["entityid_l"]
    ids.append(str(id))
print ' '.join(ids)
json_data.close()