sort_data_analytics.py

#!/usr/bin/env python
import sys
import json

def transform(obj):
    if isinstance(obj, dict):
        # Transform objects in-place
        for k, v in obj.iteritems():
            # Transform the value
            v = transform(v)
            # If this object has a data_analytics property, sort it by id
            if k == 'data_analytics' and isinstance(v, list):
                v.sort(key=lambda d: d.get('id', None))
            # Replace the value with the transformed one
            obj[k] = v
    elif isinstance(obj, list):
        # Transform every item in the list in-place
        for i, v in enumerate(obj):
            obj[i] = transform(v)
    return obj

def main():
    if len(sys.argv) == 1:
        infile = sys.stdin
        outfile = sys.stdout
    elif len(sys.argv) == 2:
        infile = open(sys.argv[1], 'rb')
        outfile = sys.stdout
    elif len(sys.argv) == 3:
        infile = open(sys.argv[1], 'rb')
        outfile = open(sys.argv[2], 'wb')
    else:
        raise SystemExit(sys.argv[0] + " [infile [outfile]]")
    with infile:
        try:
            obj = transform(json.load(infile))
        except ValueError, e:
            raise SystemExit(e)
    with outfile:
        json.dump(obj, outfile, sort_keys=True,
                  indent=4, separators=(',', ': '))
        outfile.write('\n')


if __name__ == '__main__':
    main()