quizzer/ui/cli.py

   1 try:
   2     import readline as _readline
   3 except ImportError as _readline_import_error:
   4     _readline = None
   5
   6 from . import UserInterface
   7
   8
   9 class CommandLineInterface (UserInterface):
  10     def run(self):
  11         while True:
  12             question = self.get_question()
  13             if not question:
  14                 break
  15             print(question.prompt)
  16             while True:
  17                 try:
  18                     answer = input('? ')
  19                 except EOFError:
  20                     answer = 'quit'
  21                 a = answer.strip().lower()
  22                 if a in ['q', 'quit']:
  23                     print()
  24                     return
  25                 if a in ['?', 'help']:
  26                     print()
  27                     print(question.prompt)
  28                     print(question.help)
  29                     continue
  30                 break
  31             correct = self.process_answer(question=question, answer=answer)
  32             if correct:
  33                 print('correct\n')
  34             else:
  35                 print('incorrect\n')
  36
  37     def display_results(self):
  38         print('results:')
  39         for question in self.quiz:
  40             if question.id in self.answers:
  41                 self.display_result(question=question)
  42                 print()
  43         self.display_totals()
  44
  45     def display_result(self, question):
  46         answers = self.answers.get(question.id, [])
  47         print('question:     {}'.format(question.prompt))
  48         la = len(answers)
  49         lc = len([a for a in answers if a['correct']])
  50         print('answers: {}/{} ({:.2f})'.format(lc, la, float(lc)/la))
  51         for answer in answers:
  52             if answer['correct']:
  53                 correct = 'correct'
  54             else:
  55                 correct = 'incorrect'
  56             print('  you answered: {}'.format(answer['answer']))
  57             print('     which was: {}'.format(correct))
  58
  59     def display_totals(self):
  60         answered = self.answers.get_answered(questions=self.quiz)
  61         correctly_answered = self.answers.get_correctly_answered(
  62             questions=self.quiz)
  63         la = len(answered)
  64         lc = len(correctly_answered)
  65         print('answered {} of {} questions'.format(la, len(self.quiz)))
  66         print(('of the answered questions, {} ({:.2f}) were answered correctly'
  67                ).format(lc, float(lc)/la))