show colorful json, regular json or just the text from stdin

jsn.py

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

import sys
from json import loads
from json import dumps

try:
  from pygments import highlight, lexers, formatters
  def show(d):
    print(highlight(dumps(loads(d), indent=2, sort_keys=True),
                    lexers.JsonLexer(),
                    formatters.TerminalFormatter()))

except Exception as e:
  def show(d):
    print(dumps(loads(d), indent=2, sort_keys=True))

def main(d):
  try:
    print(show(d))
  except Exception as e:
    s = '\njson error: ' + str(e) + '\n'
    print(s, file=sys.stderr)
    print(d)

if __name__ == '__main__':
  d = '\n'.join([l for l in sys.stdin])
  main(d)