+ if not self.answers:
+ return None
+ answers = json.loads(self.answers)
+ if exercise_id not in answers:
+ return None
+ else:
+ answer = answers[exercise_id]['closed_part']
+ t = exercise['type']
+ if t == 'edumed_uporzadkuj':
+ return exercise['points'] if map(int, answer) == exercise['answer'] else 0
+ elif t == 'edumed_przyporzadkuj':
+ toret = 0
+ for bucket_id, items in answer.items():
+ for item_id in items:
+ if exercise.get('answer_mode', None) == 'possible_buckets_for_item':
+ is_correct = int(bucket_id) in exercise['answer'].get(item_id)
+ else:
+ is_correct = int(item_id) in exercise['answer'].get(bucket_id, [])
+ if is_correct:
+ toret += exercise['points_per_hit']
+ return toret
+ elif t == 'edumed_wybor':
+ if exercise.get('answer_mode', None) == 'multi':
+ if not answer:
+ return None
+ # return exercise['points'] if map(int, answer) == exercise['answer'] else 0
+ correct = 0.
+ for i in xrange(1, len(exercise['options']) + 1):
+ if (str(i) in answer) == (i in exercise['answer']):
+ correct += 1
+ points1 = exercise['points'] * correct/len(exercise['options'])
+ points2 = exercise['points'] if map(int, answer) == exercise['answer'] else 0
+ return points1 + points2
+ elif len(exercise['answer']) == 1:
+ if len(answer) and int(answer[0]) == exercise['answer'][0]:
+ return exercise['points']
+ else:
+ return 0
+ else:
+ toret = 0
+ if exercise.get('answer_mode', None) == 'all_or_nothing':
+ toret = exercise['points'] if map(int, answer) == exercise['answer'] else 0
+ else:
+ # głupie i szkodliwe
+ for answer_id in map(int, answer):
+ if answer_id in exercise['answer']:
+ toret += exercise['points_per_hit']
+ return toret
+ elif t == 'edumed_prawdafalsz':
+ toret = 0
+ for idx, statement in enumerate(exercise['statements']):
+ if statement[1] == 'ignore':
+ continue
+ if answer[idx] == 'true':
+ given = True
+ elif answer[idx] == 'false':
+ given = False
+ else:
+ given = None
+ if given == statement[1]:
+ toret += exercise['points_per_hit']
+ return toret
+ else:
+ raise NotImplementedError