code: def cookie_is_encoded(data):
      ''' Verify and decode an encoded string. Return an object or None'''
      return bool(data.startswith(u'!'.encode('ascii')) and u'?'.encode('ascii') in dataf cookie_is_encoded(data):
      ''' Verify and decode an encoded string. Return an object or None'''
      return bool(data.startswith(u'!'.encode('ascii')) and u'?'.encode('ascii') in data)
docs: Verify and decode an encoded string. Return an object or None