code: def _ask(self, answers):
          if isinstance(self.validator, list):
              for v in self.validator:
                  v.answers = answers
          else:
              self.validator.answers = answers
          while(True):
              q = self.question % answers
              if not self.choices():
                  logger.warn('No choices were supplied for "%s"' % q)
                  return None
              if self.value in answers:
                  default = Validator.stringify(answers[self.value])
                  answer = self._get_input("%s [%s]: " % (q, default))
                  if answer == '':
                      answer = answers[self.value]
              else:
                  answer = self._get_input("%s: " % q)
              if answer == '.' and self.multiple:
                  return None
              if self.validate(answer):
                  return self.answer()
              else:
                  if isinstance(self.validator, list):
                      for v in self.validator:
                          if v.error() != '':
                              print(v.error())
                  else:
                      print(self.validator.error())