Python correctmap.CorrectMap类代码示例

    def test_update_from_correctmap(self):
        # Initialize a CorrectMap with some properties
        self.cmap.set(
            answer_id='1_2_1',
            correctness='correct',
            npoints=5,
            msg='Test message',
            hint='Test hint',
            hintmode='always',
            queuestate={
                'key': 'secretstring',
                'time': '20130228100026'
            }
        )

        self.cmap.set_overall_message("Test message")

        # Create a second cmap, then update it to have the same properties
        # as the first cmap
        other_cmap = CorrectMap()
        other_cmap.update(self.cmap)

        # Assert that it has all the same properties
        self.assertEqual(
            other_cmap.get_overall_message(),
            self.cmap.get_overall_message()
        )

        self.assertEqual(
            other_cmap.get_dict(),
            self.cmap.get_dict()
        )

    def update_score(self, score_msg, queuekey):
        """
        Deliver grading response (e.g. from async code checking) to
            the specific ResponseType that requested grading

        Returns an updated CorrectMap
        """
        cmap = CorrectMap()
        cmap.update(self.correct_map)
        for responder in self.responders.values():
            if hasattr(responder, "update_score"):
                # Each LoncapaResponse will update its specific entries in cmap
                #   cmap is passed by reference
                responder.update_score(score_msg, cmap, queuekey)
        self.correct_map.set_dict(cmap.get_dict())
        return cmap

 def do_reset(self):
     """
     Reset internal state to unfinished, with no answers
     """
     self.student_answers = dict()
     self.correct_map = CorrectMap()
     self.done = False

    def _grade_answers(self, student_answers):
        """
        Internal grading call used for checking new 'student_answers' and also
        rescoring existing student_answers.

        For new student_answers being graded, `student_answers` is a dict of all the
        entries from request.POST, but with the first part of each key removed
        (the string before the first "_").  Thus, for example,
        input_ID123 -> ID123, and input_fromjs_ID123 -> fromjs_ID123.

        For rescoring, `student_answers` is None.

        Calls the Response for each question in this problem, to do the actual grading.
        """
        # old CorrectMap
        oldcmap = self.correct_map

        # start new with empty CorrectMap
        newcmap = CorrectMap()
        # Call each responsetype instance to do actual grading
        for responder in self.responders.values():
            # File objects are passed only if responsetype explicitly allows
            # for file submissions.  But we have no way of knowing if
            # student_answers contains a proper answer or the filename of
            # an earlier submission, so for now skip these entirely.
            # TODO: figure out where to get file submissions when rescoring.
            if "filesubmission" in responder.allowed_inputfields and student_answers is None:
                _ = self.capa_system.i18n.ugettext
                raise Exception(_(u"Cannot rescore problems with possible file submissions"))

            # use 'student_answers' only if it is provided, and if it might contain a file
            # submission that would not exist in the persisted "student_answers".
            if "filesubmission" in responder.allowed_inputfields and student_answers is not None:
                results = responder.evaluate_answers(student_answers, oldcmap)
            else:
                results = responder.evaluate_answers(self.student_answers, oldcmap)
            newcmap.update(results)

        self.correct_map = newcmap
        return newcmap

class LoncapaProblem(object):
    """
    Main class for capa Problems.
    """

    def __init__(
        self, problem_text, id, capa_system, capa_module, state=None, seed=None  # pylint: disable=redefined-builtin
    ):
        """
        Initializes capa Problem.

        Arguments:

            problem_text (string): xml defining the problem.
            id (string): identifier for this problem, often a filename (no spaces).
            capa_system (LoncapaSystem): LoncapaSystem instance which provides OS,
                rendering, user context, and other resources.
            capa_module: instance needed to access runtime/logging
            state (dict): containing the following keys:
                - `seed` (int) random number generator seed
                - `student_answers` (dict) maps input id to the stored answer for that input
                - `correct_map` (CorrectMap) a map of each input to their 'correctness'
                - `done` (bool) indicates whether or not this problem is considered done
                - `input_state` (dict) maps input_id to a dictionary that holds the state for that input
            seed (int): random number generator seed.

        """

        ## Initialize class variables from state
        self.do_reset()
        self.problem_id = id
        self.capa_system = capa_system
        self.capa_module = capa_module

        state = state or {}

        # Set seed according to the following priority:
        #       1. Contained in problem's state
        #       2. Passed into capa_problem via constructor
        self.seed = state.get("seed", seed)
        assert self.seed is not None, "Seed must be provided for LoncapaProblem."

        self.student_answers = state.get("student_answers", {})
        if "correct_map" in state:
            self.correct_map.set_dict(state["correct_map"])
        self.done = state.get("done", False)
        self.input_state = state.get("input_state", {})

        # Convert startouttext and endouttext to proper <text></text>
        problem_text = re.sub(r"startouttext\s*/", "text", problem_text)
        problem_text = re.sub(r"endouttext\s*/", "/text", problem_text)
        self.problem_text = problem_text

        # parse problem XML file into an element tree
        self.tree = etree.XML(problem_text)

        self.make_xml_compatible(self.tree)

        # handle any <include file="foo"> tags
        self._process_includes()

        # construct script processor context (eg for customresponse problems)
        self.context = self._extract_context(self.tree)

        # Pre-parse the XML tree: modifies it to add ID's and perform some in-place
        # transformations.  This also creates the dict (self.responders) of Response
        # instances for each question in the problem. The dict has keys = xml subtree of
        # Response, values = Response instance
        self.problem_data = self._preprocess_problem(self.tree)

        if not self.student_answers:  # True when student_answers is an empty dict
            self.set_initial_display()

        # dictionary of InputType objects associated with this problem
        #   input_id string -> InputType object
        self.inputs = {}

        # Run response late_transforms last (see MultipleChoiceResponse)
        # Sort the responses to be in *_1 *_2 ... order.
        responses = self.responders.values()
        responses = sorted(responses, key=lambda resp: int(resp.id[resp.id.rindex("_") + 1 :]))
        for response in responses:
            if hasattr(response, "late_transforms"):
                response.late_transforms(self)

        self.extracted_tree = self._extract_html(self.tree)

    def make_xml_compatible(self, tree):
        """
        Adjust tree xml in-place for compatibility before creating
        a problem from it.
        The idea here is to provide a central point for XML translation,
        for example, supporting an old XML format. At present, there just two translations.

        1. <additional_answer> compatibility translation:
        old:    <additional_answer>ANSWER</additional_answer>
        convert to
        new:    <additional_answer answer="ANSWER">OPTIONAL-HINT</addional_answer>

        2. <optioninput> compatibility translation:
#.........这里部分代码省略.........

class LoncapaProblem(object):
    '''
    Main class for capa Problems.
    '''

    def __init__(self, problem_text, id, state=None, seed=None, system=None):
        '''
        Initializes capa Problem.

        Arguments:

         - problem_text (string): xml defining the problem
         - id           (string): identifier for this problem; often a filename (no spaces)
         - seed         (int): random number generator seed (int)
         - state        (dict): containing the following keys:
                                - 'seed' - (int) random number generator seed
                                - 'student_answers' - (dict) maps input id to the stored answer for that input
                                - 'correct_map' (CorrectMap) a map of each input to their 'correctness'
                                - 'done' - (bool) indicates whether or not this problem is considered done
                                - 'input_state' - (dict) maps input_id to a dictionary that holds the state for that input
         - system       (ModuleSystem): ModuleSystem instance which provides OS,
                                        rendering, and user context

        '''

        ## Initialize class variables from state
        self.do_reset()
        self.problem_id = id
        self.system = system
        if self.system is None:
            raise Exception()

        state = state or {}

        # Set seed according to the following priority:
        #       1. Contained in problem's state
        #       2. Passed into capa_problem via constructor
        self.seed = state.get('seed', seed)
        assert self.seed is not None, "Seed must be provided for LoncapaProblem."

        self.student_answers = state.get('student_answers', {})
        if 'correct_map' in state:
            self.correct_map.set_dict(state['correct_map'])
        self.done = state.get('done', False)
        self.input_state = state.get('input_state', {})

        # Convert startouttext and endouttext to proper <text></text>
        problem_text = re.sub(r"startouttext\s*/", "text", problem_text)
        problem_text = re.sub(r"endouttext\s*/", "/text", problem_text)
        self.problem_text = problem_text

        # parse problem XML file into an element tree
        self.tree = etree.XML(problem_text)

        # handle any <include file="foo"> tags
        self._process_includes()

        # construct script processor context (eg for customresponse problems)
        self.context = self._extract_context(self.tree)

        # Pre-parse the XML tree: modifies it to add ID's and perform some in-place
        # transformations.  This also creates the dict (self.responders) of Response
        # instances for each question in the problem. The dict has keys = xml subtree of
        # Response, values = Response instance
        self._preprocess_problem(self.tree)

        if not self.student_answers:  # True when student_answers is an empty dict
            self.set_initial_display()

        # dictionary of InputType objects associated with this problem
        #   input_id string -> InputType object
        self.inputs = {}

        self.extracted_tree = self._extract_html(self.tree)

    def do_reset(self):
        '''
        Reset internal state to unfinished, with no answers
        '''
        self.student_answers = dict()
        self.correct_map = CorrectMap()
        self.done = False

    def set_initial_display(self):
        """
        Set the student's answers to the responders' initial displays, if specified.
        """
        initial_answers = dict()
        for responder in self.responders.values():
            if hasattr(responder, 'get_initial_display'):
                initial_answers.update(responder.get_initial_display())

        self.student_answers = initial_answers

    def __unicode__(self):
        return u"LoncapaProblem ({0})".format(self.problem_id)

    def get_state(self):
        '''
        Stored per-user session data neeeded to:
#.........这里部分代码省略.........

 def _build_correct_map(self, *args):
     cmap = CorrectMap()
     for index, correctness in enumerate(args):
         cmap.update(CorrectMap(answer_id=self._build_question_id(index),
                                correctness=correctness))
     return cmap.cmap

class LoncapaProblem(object):
    """
    Main class for capa Problems.
    """
    def __init__(self, problem_text, id, capa_system, capa_module,  # pylint: disable=redefined-builtin
                 state=None, seed=None, minimal_init=False, extract_tree=True):
        """
        Initializes capa Problem.

        Arguments:

            problem_text (string): xml defining the problem.
            id (string): identifier for this problem, often a filename (no spaces).
            capa_system (LoncapaSystem): LoncapaSystem instance which provides OS,
                rendering, user context, and other resources.
            capa_module: instance needed to access runtime/logging
            state (dict): containing the following keys:
                - `seed` (int) random number generator seed
                - `student_answers` (dict) maps input id to the stored answer for that input
                - 'has_saved_answers' (Boolean) True if the answer has been saved since last submit.
                - `correct_map` (CorrectMap) a map of each input to their 'correctness'
                - `done` (bool) indicates whether or not this problem is considered done
                - `input_state` (dict) maps input_id to a dictionary that holds the state for that input
            seed (int): random number generator seed.
            minimal_init (bool): whether to skip pre-processing student answers
            extract_tree (bool): whether to parse the problem XML and store the HTML

        """

        ## Initialize class variables from state
        self.do_reset()
        self.problem_id = id
        self.capa_system = capa_system
        self.capa_module = capa_module

        state = state or {}

        # Set seed according to the following priority:
        #       1. Contained in problem's state
        #       2. Passed into capa_problem via constructor
        self.seed = state.get('seed', seed)
        assert self.seed is not None, "Seed must be provided for LoncapaProblem."

        self.student_answers = state.get('student_answers', {})
        self.has_saved_answers = state.get('has_saved_answers', False)
        if 'correct_map' in state:
            self.correct_map.set_dict(state['correct_map'])
        self.done = state.get('done', False)
        self.input_state = state.get('input_state', {})

        # Convert startouttext and endouttext to proper <text></text>
        problem_text = re.sub(r"startouttext\s*/", "text", problem_text)
        problem_text = re.sub(r"endouttext\s*/", "/text", problem_text)
        self.problem_text = problem_text

        # parse problem XML file into an element tree
        self.tree = etree.XML(problem_text)

        self.make_xml_compatible(self.tree)

        # handle any <include file="foo"> tags
        self._process_includes()

        # construct script processor context (eg for customresponse problems)
        if minimal_init:
            self.context = {}
        else:
            self.context = self._extract_context(self.tree)

        # Pre-parse the XML tree: modifies it to add ID's and perform some in-place
        # transformations.  This also creates the dict (self.responders) of Response
        # instances for each question in the problem. The dict has keys = xml subtree of
        # Response, values = Response instance
        self.problem_data = self._preprocess_problem(self.tree, minimal_init)

        if not minimal_init:
            if not self.student_answers:  # True when student_answers is an empty dict
                self.set_initial_display()

            # dictionary of InputType objects associated with this problem
            #   input_id string -> InputType object
            self.inputs = {}

            # Run response late_transforms last (see MultipleChoiceResponse)
            # Sort the responses to be in *_1 *_2 ... order.
            responses = self.responders.values()
            responses = sorted(responses, key=lambda resp: int(resp.id[resp.id.rindex('_') + 1:]))
            for response in responses:
                if hasattr(response, 'late_transforms'):
                    response.late_transforms(self)

            if extract_tree:
                self.extracted_tree = self._extract_html(self.tree)

    def make_xml_compatible(self, tree):
        """
        Adjust tree xml in-place for compatibility before creating
        a problem from it.
        The idea here is to provide a central point for XML translation,
        for example, supporting an old XML format. At present, there just two translations.
#.........这里部分代码省略.........

    def fix_studentmodule_grade(self, module, save_changes):
        ''' Fix the grade assigned to a StudentModule'''
        module_state = module.state
        if module_state is None:
            # not likely, since we filter on it.  But in general...
            LOG.info(
                u"No state found for %s module %s for student %s in course %s",
                module.module_type,
                module.module_state_key,
                module.student.username,
                module.course_id,
            )
            return

        state_dict = json.loads(module_state)
        self.num_visited += 1

        # LoncapaProblem.get_score() checks student_answers -- if there are none, we will return a grade of 0
        # Check that this is the case, but do so sooner, before we do any of the other grading work.
        student_answers = state_dict['student_answers']
        if (not student_answers) or len(student_answers) == 0:
            # we should not have a grade here:
            if module.grade != 0:
                log_msg = (
                    u"No answer found but grade %(grade)s exists for %(type)s module %(id)s for student %(student)s " +
                    u"in course %(course_id)s"
                )

                LOG.error(log_msg, {
                    "grade": module.grade,
                    "type": module.module_type,
                    "id": module.module_state_key,
                    "student": module.student.username,
                    "course_id": module.course_id,
                })
            else:
                log_msg = (
                    u"No answer and no grade found for %(type)s module %(id)s for student %(student)s " +
                    u"in course %(course_id)s"
                )

                LOG.debug(log_msg, {
                    "grade": module.grade,
                    "type": module.module_type,
                    "id": module.module_state_key,
                    "student": module.student.username,
                    "course_id": module.course_id,
                })
            return

        # load into a CorrectMap, as done in LoncapaProblem.__init__():
        correct_map = CorrectMap()
        if 'correct_map' in state_dict:
            correct_map.set_dict(state_dict['correct_map'])

        # calculate score the way LoncapaProblem.get_score() works, by deferring to
        # CorrectMap's get_npoints implementation.
        correct = 0
        for key in correct_map:
            correct += correct_map.get_npoints(key)

        if module.grade == correct:
            # nothing to change
            log_msg = u"Grade matches for %(type)s module %(id)s for student %(student)s in course %(course_id)s"
            LOG.debug(log_msg, {
                "type": module.module_type,
                "id": module.module_state_key,
                "student": module.student.username,
                "course_id": module.course_id,
            })
        elif save_changes:
            # make the change
            log_msg = (
                u"Grade changing from %(grade)s to %(correct)s for %(type)s module " +
                u"%(id)s for student %(student)s in course %(course_id)s"
            )

            LOG.debug(log_msg, {
                "grade": module.grade,
                "correct": correct,
                "type": module.module_type,
                "id": module.module_state_key,
                "student": module.student.username,
                "course_id": module.course_id,
            })

            module.grade = correct
            module.save()
            self.num_changed += 1
        else:
            # don't make the change, but log that the change would be made
            log_msg = (
                u"Grade would change from %(grade)s to %(correct)s for %(type)s module %(id)s for student " +
                u"%(student)s in course %(course_id)s"
            )

            LOG.debug(log_msg, {
                "grade": module.grade,
                "correct": correct,
                "type": module.module_type,
#.........这里部分代码省略.........

class CorrectMapTest(unittest.TestCase):
    """
    Tests to verify that CorrectMap behaves correctly
    """

    def setUp(self):
        super(CorrectMapTest, self).setUp()
        self.cmap = CorrectMap()

    def test_set_input_properties(self):
        # Set the correctmap properties for two inputs
        self.cmap.set(
            answer_id='1_2_1',
            correctness='correct',
            npoints=5,
            msg='Test message',
            hint='Test hint',
            hintmode='always',
            queuestate={
                'key': 'secretstring',
                'time': '20130228100026'
            }
        )

        self.cmap.set(
            answer_id='2_2_1',
            correctness='incorrect',
            npoints=None,
            msg=None,
            hint=None,
            hintmode=None,
            queuestate=None
        )

        # Assert that each input has the expected properties
        self.assertTrue(self.cmap.is_correct('1_2_1'))
        self.assertFalse(self.cmap.is_correct('2_2_1'))

        self.assertEqual(self.cmap.get_correctness('1_2_1'), 'correct')
        self.assertEqual(self.cmap.get_correctness('2_2_1'), 'incorrect')

        self.assertEqual(self.cmap.get_npoints('1_2_1'), 5)
        self.assertEqual(self.cmap.get_npoints('2_2_1'), 0)

        self.assertEqual(self.cmap.get_msg('1_2_1'), 'Test message')
        self.assertEqual(self.cmap.get_msg('2_2_1'), None)

        self.assertEqual(self.cmap.get_hint('1_2_1'), 'Test hint')
        self.assertEqual(self.cmap.get_hint('2_2_1'), None)

        self.assertEqual(self.cmap.get_hintmode('1_2_1'), 'always')
        self.assertEqual(self.cmap.get_hintmode('2_2_1'), None)

        self.assertTrue(self.cmap.is_queued('1_2_1'))
        self.assertFalse(self.cmap.is_queued('2_2_1'))

        self.assertEqual(self.cmap.get_queuetime_str('1_2_1'), '20130228100026')
        self.assertEqual(self.cmap.get_queuetime_str('2_2_1'), None)

        self.assertTrue(self.cmap.is_right_queuekey('1_2_1', 'secretstring'))
        self.assertFalse(self.cmap.is_right_queuekey('1_2_1', 'invalidstr'))
        self.assertFalse(self.cmap.is_right_queuekey('1_2_1', ''))
        self.assertFalse(self.cmap.is_right_queuekey('1_2_1', None))

        self.assertFalse(self.cmap.is_right_queuekey('2_2_1', 'secretstring'))
        self.assertFalse(self.cmap.is_right_queuekey('2_2_1', 'invalidstr'))
        self.assertFalse(self.cmap.is_right_queuekey('2_2_1', ''))
        self.assertFalse(self.cmap.is_right_queuekey('2_2_1', None))

    def test_get_npoints(self):
        # Set the correctmap properties for 4 inputs
        # 1) correct, 5 points
        # 2) correct, None points
        # 3) incorrect, 5 points
        # 4) incorrect, None points
        # 5) correct, 0 points
        self.cmap.set(
            answer_id='1_2_1',
            correctness='correct',
            npoints=5.3
        )

        self.cmap.set(
            answer_id='2_2_1',
            correctness='correct',
            npoints=None
        )

        self.cmap.set(
            answer_id='3_2_1',
            correctness='incorrect',
            npoints=5
        )

        self.cmap.set(
            answer_id='4_2_1',
            correctness='incorrect',
            npoints=None
        )

#.........这里部分代码省略.........

 def setUp(self):
     super(CorrectMapTest, self).setUp()
     self.cmap = CorrectMap()

 def setUp(self):
     self.cmap = CorrectMap()