def parse(self, source):
""" parses a question source. Comments should be removed first"""
# split according to the answer
match = utils.reAnswer.match(source)
if not match:
# it is a description
self.answers = pgans.Description(self)
self._parseHead(source)
else:
self.tail = utils.stripMatch(match, 'tail')
self._parseHead(match.group('head'))
self.generalFeedback = utils.stripMatch(match, 'generalfeedback')
# replace \n
self.generalFeedback = re.sub(r'\\n', '\n', self.generalFeedback)
self._parseAnswer(match.group('answer'))
def _parseNumericText(self, text):
m = utils.reAnswerNumericInterval.match(text)
if m:
a = pgans.NumericAnswerMinMax(m)
else:
m = utils.reAnswerNumericValue.match(text)
if m:
a = pgans.NumericAnswer(m)
else:
self.valid = False
return None
a.feedback = utils.stripMatch(m, "feedback")
return a
def __init__(self, match):
if not match:
return
self.answer = match.group('answer').strip()
self.feedback = stripMatch(match, "feedback")
# At least one = sign => selects (radio buttons)
self.select = match.group('sign') == "="
# fractions
if match.group('fraction'):
self.fraction = float(match.group('fraction'))
else:
if match.group('sign') == "=":
self.fraction = 100
else:
self.fraction = 0
# matching
match = reMatch.match(self.answer)
self.isMatching = match is not None
if self.isMatching:
self.answer = match.group('answer')
self.question = match.group('question')
def _parseNumericAnswers(self, answer):
self.numeric = True
answers = []
for match in utils.reAnswerMultipleChoices.finditer(answer):
a = self._parseNumericText(match.group('answer'))
if not a:
return
# fractions
if match.group('fraction'):
a.fraction = float(match.group('fraction'))
else:
if match.group('sign') == "=":
a.fraction = 100
else:
a.fraction = 0
a.feedback = utils.stripMatch(match, "feedback")
answers.append(a)
if len(answers) == 0:
a = self._parseNumericText(answer)
if a:
a.fraction = 100
answers.append(a)
self.answers = pgans.NumericAnswerSet(self, answers)
def __init__(self, question, match):
AnswerSet.__init__(self, question)
self.answer = match.group('answer').startswith('T')
self.feedbackWrong = stripMatch(match, "feedback")
self.feedbackCorrect = stripMatch(match, "feedback2")
self.cc_profile = 'TRUEFALSE'