new_contents: a={"sono un rottame":"no" "sono utile":"sì"}
  b="niente"
  while b!=""
    b=raw_input "fammi una domanda!"
    if a.has_key(b):
      print a[b]
    else
     print "non capisco"
     a = raw_input "cosa devo dire?"
  import json
  json.dumps(['foo', {'bar': ('baz', None, 1.0, 2)}])
  print json.dumps("\"foo\bar")
  print json.dumps(u'\u1234')
  print json.dumps('\\')
  print json.dumps({"c": 0, "b": 0, "a": 0}, sort_keys=True)
  from StringIO import StringIO
  io = StringIO()
  json.dump(['streaming API'], io)
  io.getvalue()
  
subject: Create _init_.py