The Tor Browser / file revision

 r"""

 Using simplejson from the shell to validate and

 pretty-print::

     $ echo '{"json":"obj"}' | python -msimplejson

     {

         "json": "obj"

     }

     $ echo '{ 1.2:3.4}' | python -msimplejson

     Expecting property name: line 1 column 2 (char 2)

 Note that the JSON produced by this module's default settings

 is a subset of YAML, so it may be used as a serializer for that as well.

 """

 import simplejson

 #

 # Pretty printer:

 #     curl http://mochikit.com/examples/ajax_tables/domains.json | python -msimplejson.tool

 #

 def main():

     import sys

     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("%s [infile [outfile]]" % (sys.argv[0],))

     try:

         obj = simplejson.load(infile)

     except ValueError, e:

         raise SystemExit(e)

     simplejson.dump(obj, outfile, sort_keys=True, indent=4)

     outfile.write('\n')

 if __name__ == '__main__':

     main()