Python Gradebook.find_assignment方法代码示例

# 需要导入模块: from nbgrader.api import Gradebook [as 别名]
# 或者: from nbgrader.api.Gradebook import find_assignment [as 别名]
    def init_assignment(self, assignment_id, student_id):
        super(AssignApp, self).init_assignment(assignment_id, student_id)

        # try to get the assignment from the database, and throw an error if it
        # doesn't exist
        gb = Gradebook(self.db_url)
        try:
            gb.find_assignment(assignment_id)
        except MissingEntry:
            if self.create_assignment:
                self.log.warning("Creating assignment '%s'", assignment_id)
                gb.add_assignment(assignment_id)
            else:
                self.fail("No assignment called '%s' exists in the database", assignment_id)

# 需要导入模块: from nbgrader.api import Gradebook [as 别名]
# 或者: from nbgrader.api.Gradebook import find_assignment [as 别名]
    def _clean_old_notebooks(self, assignment_id, student_id):
        gb = Gradebook(self.db_url)
        assignment = gb.find_assignment(assignment_id)
        regexp = os.path.join(
            self._format_source("(?P<assignment_id>.*)", "(?P<student_id>.*)"),
            "(?P<notebook_id>.*).ipynb")

        # find a set of notebook ids for new notebooks
        new_notebook_ids = set([])
        for notebook in self.notebooks:
            m = re.match(regexp, notebook)
            if m is None:
                raise RuntimeError("Could not match '%s' with regexp '%s'", notebook, regexp)
            gd = m.groupdict()
            if gd['assignment_id'] == assignment_id and gd['student_id'] == student_id:
                new_notebook_ids.add(gd['notebook_id'])

        # pull out the existing notebook ids
        old_notebook_ids = set(x.name for x in assignment.notebooks)

        # no added or removed notebooks, so nothing to do
        if old_notebook_ids == new_notebook_ids:
            return

        # some notebooks have been removed, but there are submissions associated
        # with the assignment, so we don't want to overwrite stuff
        if len(assignment.submissions) > 0:
            self.fail("Cannot modify existing assignment '%s' because there are submissions associated with it", assignment)

        # remove the old notebooks
        for notebook_id in (old_notebook_ids - new_notebook_ids):
            self.log.warning("Removing notebook '%s' from the gradebook", notebook_id)
            gb.remove_notebook(notebook_id, assignment_id)

# 需要导入模块: from nbgrader.api import Gradebook [as 别名]
# 或者: from nbgrader.api.Gradebook import find_assignment [as 别名]
    def init_assignment(self, assignment_id, student_id):
        super(AssignApp, self).init_assignment(assignment_id, student_id)

        # try to get the assignment from the database, and throw an error if it
        # doesn't exist
        gb = Gradebook(self.db_url)
        try:
            gb.find_assignment(assignment_id)
        except MissingEntry:
            if self.create_assignment:
                self.log.warning("Creating assignment '%s'", assignment_id)
                gb.add_assignment(assignment_id)
            else:
                self.fail("No assignment called '%s' exists in the database", assignment_id)
        else:
            # check if there are any extra notebooks in the db that are no longer
            # part of the assignment, and if so, remove them
            if self.notebook_id == "*":
                self._clean_old_notebooks(assignment_id, student_id)

# 需要导入模块: from nbgrader.api import Gradebook [as 别名]
# 或者: from nbgrader.api.Gradebook import find_assignment [as 别名]
class SaveAutoGrades(Preprocessor):
    """Preprocessor for saving out the autograder grades into a MongoDB"""

    db_name = Unicode("gradebook", config=True, help="Database name")
    db_ip = Unicode("localhost", config=True, help="IP address for the database")
    db_port = Integer(27017, config=True, help="Port for the database")

    assignment_id = Unicode(u'assignment', config=True, help="Assignment ID")

    def preprocess(self, nb, resources):
        # connect to the mongo database
        self.gradebook = Gradebook(self.db_name, ip=self.db_ip, port=self.db_port)
        self.student = self.gradebook.find_student(
            student_id=resources['nbgrader']['student_id'])
        self.assignment = self.gradebook.find_assignment(
            assignment_id=self.assignment_id)
        self.notebook = self.gradebook.find_or_create_notebook(
            notebook_id=resources['unique_key'],
            student=self.student,
            assignment=self.assignment)

        # keep track of the number of comments we add
        self.comment_index = 0

        # process the cells
        nb, resources = super(SaveAutoGrades, self).preprocess(nb, resources)

        return nb, resources

    def _add_comment(self, cell, resources):
        """Graders can optionally add comments to the student's solutions, so
        add the comment information into the database if it doesn't
        already exist. It should NOT overwrite existing comments that
        might have been added by a grader already.

        """

        # retrieve or create the comment object from the database
        comment = self.gradebook.find_or_create_comment(
            notebook=self.notebook,
            comment_id=self.comment_index)

        # update the number of comments we have inserted
        self.comment_index += 1
        self.log.debug(comment)

    def _add_score(self, cell, resources):
        """Graders can override the autograder grades, and may need to
        manually grade written solutions anyway. This function adds
        score information to the database if it doesn't exist. It does
        NOT override the 'score' field, as this is the manual score
        that might have been provided by a grader.

        """
        # these are the fields by which we will identify the score
        # information
        grade = self.gradebook.find_or_create_grade(
            notebook=self.notebook,
            grade_id=cell.metadata['nbgrader']['grade_id'])

        # set the maximum earnable score
        points = float(cell.metadata['nbgrader']['points'])
        grade.max_score = points

        # If it's a code cell and it threw an error, then they get
        # zero points, otherwise they get max_score points. If it's a
        # text cell, we can't autograde it.
        if cell.cell_type == 'code':
            grade.autoscore = points
            for output in cell.outputs:
                if output.output_type == 'pyerr':
                    grade.autoscore = 0
                    break

        else:
            grade.autoscore = None

        # Update the grade information and print it out
        self.gradebook.update_grade(grade)
        self.log.debug(grade)

    def preprocess_cell(self, cell, resources, cell_index):
        # if it's a solution cell, then add a comment
        if utils.is_solution(cell):
            self._add_comment(cell, resources)

        # if it's a grade cell, the add a grade
        if utils.is_grade(cell):
            self._add_score(cell, resources)

        return cell, resources