#!/usr/bin/python3
# -*- coding: utf-8 -*-

import json, sys
from pprint import pprint

if not sys.stdin.isatty():
    JSON = json.loads(sys.stdin.read())
    pprint(JSON)
else:
    print("Use this script with a pipe command.")
    print("")
    print("echo '...' | python3 prettyJson.py")
    print("or")
    print("cat ... | python3 prettyJson.py")