gistfile1.txt

#!/usr/bin/env python

import json
import fileinput

def compact(raw):
    parsed = json.loads(raw)
    compacted = json.dumps(parsed, separators=(',',':'))
    return compacted

def read_from_input():
    lines = []
    for line in fileinput.input():
        lines.append(line.rstrip('\n'))
    return ''.join(lines)

raw  = read_from_input()

compacted = compact(raw)

print compacted