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             if question.multiline:
  17                 answers = []
  18             while True:
  19                 try:
  20                     answer = input('? ')
  21                 except EOFError:
  22                     answer = 'quit'
  23                 a = answer.strip().lower()
  24                 if a in ['q', 'quit']:
  25                     print()
  26                     return
  27                 if a in ['?', 'help']:
  28                     print()
  29                     print(question.prompt)
  30                     print(question.help)
  31                     continue
  32                 if question.multiline:
  33                     answers.append(answer)
  34                     if not a:
  35                         break
  36                 else:
  37                     break
  38             if question.multiline:
  39                 answer = answers
  40             correct = self.process_answer(question=question, answer=answer)
  41             if correct:
  42                 print('correct\n')
  43             else:
  44                 print('incorrect\n')
  45
  46     def display_results(self):
  47         print('results:')
  48         for question in self.quiz:
  49             if question.id in self.answers:
  50                 self.display_result(question=question)
  51                 print()
  52         self.display_totals()
  53
  54     def display_result(self, question):
  55         answers = self.answers.get(question.id, [])
  56         print('question:     {}'.format(question.prompt))
  57         la = len(answers)
  58         lc = len([a for a in answers if a['correct']])
  59         print('answers: {}/{} ({:.2f})'.format(lc, la, float(lc)/la))
  60         for answer in answers:
  61             if answer['correct']:
  62                 correct = 'correct'
  63             else:
  64                 correct = 'incorrect'
  65             print('  you answered: {}'.format(answer['answer']))
  66             print('     which was: {}'.format(correct))
  67
  68     def display_totals(self):
  69         answered = self.answers.get_answered(questions=self.quiz)
  70         correctly_answered = self.answers.get_correctly_answered(
  71             questions=self.quiz)
  72         la = len(answered)
  73         lc = len(correctly_answered)
  74         print('answered {} of {} questions'.format(la, len(self.quiz)))
  75         print(('of the answered questions, {} ({:.2f}) were answered correctly'
  76                ).format(lc, float(lc)/la))