quizzer/ui/__init__.py

   1 from .. import answerdb as _answerdb
   2
   3
   4 class UserInterface (object):
   5     "Give a quiz over a generic user interface"
   6     def __init__(self, quiz=None, answers=None, stack=None):
   7         self.quiz = quiz
   8         if answers is None:
   9             answers = _answerdb.AnswerDatabase()
  10         self.answers = answers
  11         if stack is None:
  12             stack = self.answers.get_never_correctly_answered(
  13                 questions=quiz.leaf_questions())
  14         self.stack = stack
  15
  16     def run(self):
  17         raise NotImplementedError()
  18
  19     def display_results(self):
  20         raise NotImplementedError()
  21
  22     def get_question(self):
  23         if self.stack:
  24             return self.stack.pop(0)
  25
  26     def process_answer(self, question, answer):
  27         correct = question.check(answer)
  28         self.answers.add(question=question, answer=answer, correct=correct)
  29         if not correct:
  30             self.stack.insert(0, question)
  31             for qid in reversed(question.dependencies):
  32                 self.stack.insert(0, self.quiz.get(id=qid))
  33         return correct