original_docstring: 
      A default callback after failed validation of the answer
      This funtion retuns a boolean value, True or False, in case it returns True,
      the question will be re asked!
      
docstring: A default callback after failed validation of the answer
  This funtion retuns a boolean value, True or False, in case it returns True,
  the question will be re asked!
docstring_tokens: A default callback after failed validation of the answer This funtion retuns a boolean value True or False in case it returns True the question will be re asked!
code: def default_on_error(question, choices, default, error):
      '''
      A default callback after failed validation of the answer
      This funtion retuns a boolean value, True or False, in case it returns True,
      the question will be re asked!
      '''
      sys.stderr.write('%s\n'%error)
      return False
code_tokens: def default_on_error ( question , choices , default , error ) : sys . stderr . write ( '%s\n' % error ) return False
short_docstring: A default callback after failed validation of the answer
  This funtion retuns a boolean value, True or False, in case it returns True,
  the question will be re asked!
short_docstring_tokens: A default callback after failed validation of the answer This funtion retuns a boolean value True or False in case it returns True the question will be re asked!
comment: '''
      A default callback after failed validation of the answer
      This funtion retuns a boolean value, True or False, in case it returns True,
      the question will be re asked!
      '''