findbinmoongg.py

#!/usr/bin/python3

import sys
import json

mindist = 2500

binmoonparents = set()
gasgiants = {}
sysid64 = None

for line in sys.stdin:
    line = line.strip()
    if line[-1] == ',':
        line = line[:-1]
    if line[0] == '{' and line[-1] == '}':
        body = json.loads(line)
        id64 = body['systemId64']
        if id64 != sysid64:
            for bid in binmoonparents:
                if bid in gasgiants:
                    gg = gasgiants[bid]
                    if gg['distanceToArrival'] >= mindist:
                        print(json.dumps(gg))
            binmoonparents = set()
            gasgiants = {}
            sysid64 = id64
        if 'parents' in body and body['parents'] is not None and len(body['parents']) >= 3:
            parents = body['parents']
            if 'Null' in parents[0] and 'Planet' in parents[1]:
                binmoonparents.add(parents[1]['Planet'])
        if 'bodyId' in body and body['bodyId'] is not None and body['subType'] is not None and 'gas giant' in body['subType'].lower():
            gasgiants[body['bodyId']] = body