Add CourseDir.student_id_exclude option to exclude students

nbgrader/converters/base.py

@@ -172,6 +172,11 @@ def init_destination(self, assignment_id, student_id):
         initialization was successful).
 
         """
+        if self.coursedir.student_id_exclude:
+            exclude_ids = self.coursedir.student_id_exclude.split(',')
+            if student_id in exclude_ids:
+                return False
+
         dest = os.path.normpath(self._format_dest(assignment_id, student_id))
 
         # the destination doesn't exist, so we haven't processed it

nbgrader/coursedir.py

@@ -55,6 +55,19 @@ def _validate_student_id(self, proposal):
             self.log.warning("student_id '%s' has trailing whitespace, stripping it away", proposal['value'])
         return proposal['value'].strip()
 
+    student_id_exclude = Unicode(
+        "",
+        help=dedent(
+            """
+            Comma-separated list of student IDs to exclude.  Counterpart of student_id.
+
+            This is useful when running commands on all students, but certain
+            students cause errors or otherwise must be left out.  Works at
+            least for autograde, generate_feedback, and release_feedback.
+            """
+        )
+    ).tag(config=True)
+
     assignment_id = Unicode(
         "",
         help=dedent(

nbgrader/exchange/release_feedback.py

@@ -31,12 +31,18 @@ def copy_files(self):
         self.log.info("student_id: {}".format(student_id))
         html_files = glob.glob(os.path.join(self.src_path, student_id, self.coursedir.assignment_id, '*.html'))
         self.log.info("html_files: {}".format(html_files))
+        if self.coursedir.student_id_exclude:
+            exclude_students = set(self.coursedir.student_id_exclude.split(','))
+        else:
+            exclude_students = set()
         for html_file in html_files:
             assignment_dir, file_name = os.path.split(html_file)
             timestamp = open(os.path.join(assignment_dir, 'timestamp.txt')).read()
             self.log.info("timestamp {}".format(timestamp))
-            user = assignment_dir.split('/')[-2]
-            submissionDir = os.path.join(self.src_path, '../submitted/', '{0}/{1}'.format(user, self.coursedir.assignment_id))
+            student_id = assignment_dir.split('/')[-2]
+            if student_id in exclude_students:
+                continue
+            submissionDir = os.path.join(self.src_path, '../submitted/', '{0}/{1}'.format(student_id, self.coursedir.assignment_id))
             fname, _ = os.path.splitext(file_name.replace('.html', ''))
             self.log.info("found html file {}".format(fname))
             nbfile = "{0}/{1}.ipynb".format(submissionDir, fname)

nbgrader/tests/apps/test_nbgrader_autograde.py

@@ -10,7 +10,7 @@
 from textwrap import dedent
 from nbformat import current_nbformat
 
-from ...api import Gradebook
+from ...api import Gradebook, MissingEntry
 from ...utils import remove
 from ...nbgraderformat import reads
 from .. import run_nbgrader
@@ -94,6 +94,34 @@ def test_grade(self, db, course_dir):
             assert comment1.comment == None
             assert comment2.comment == None
 
+    def test_student_id_exclude(self, db, course_dir):
+        """Does --CourseDirectory.student_id_exclude=X exclude students?"""
+        with open("nbgrader_config.py", "a") as fh:
+            fh.write("""c.CourseDirectory.db_assignments = [dict(name='ps1', duedate='2015-02-02 14:58:23.948203 America/Los_Angeles')]\n""")
+            fh.write("""c.CourseDirectory.db_students = [dict(id="foo"), dict(id="bar"), dict(id="baz")]""")
+
+        self._copy_file(join("files", "submitted-unchanged.ipynb"), join(course_dir, "source", "ps1", "p1.ipynb"))
+        run_nbgrader(["generate_assignment", "ps1", "--db", db])
+
+        self._copy_file(join("files", "submitted-unchanged.ipynb"), join(course_dir, "submitted", "foo", "ps1", "p1.ipynb"))
+        self._copy_file(join("files", "submitted-changed.ipynb"), join(course_dir, "submitted", "bar", "ps1", "p1.ipynb"))
+        self._copy_file(join("files", "submitted-changed.ipynb"), join(course_dir, "submitted", "baz", "ps1", "p1.ipynb"))
+        run_nbgrader(["autograde", "ps1", "--db", db, '--CourseDirectory.student_id_exclude=bar,baz'])
+
+        assert os.path.isfile(join(course_dir, "autograded", "foo", "ps1", "p1.ipynb"))
+        assert not os.path.isfile(join(course_dir, "autograded", "bar", "ps1", "p1.ipynb"))
+        assert not os.path.isfile(join(course_dir, "autograded", "baz", "ps1", "p1.ipynb"))
+
+        with Gradebook(db) as gb:
+            notebook = gb.find_submission_notebook("p1", "ps1", "foo")
+            assert notebook.score == 1
+
+            with pytest.raises(MissingEntry):
+                notebook = gb.find_submission_notebook("p1", "ps1", "bar")
+            with pytest.raises(MissingEntry):
+                notebook = gb.find_submission_notebook("p1", "ps1", "baz")
+
+
     def test_grade_timestamp(self, db, course_dir):
         """Is a timestamp correctly read in?"""
         with open("nbgrader_config.py", "a") as fh:

nbgrader/tests/apps/test_nbgrader_generate_feedback.py

@@ -42,6 +42,27 @@ def test_single_file(self, db, course_dir):
 
         assert exists(join(course_dir, "feedback", "foo", "ps1", "p1.html"))
 
+    def test_student_id_exclude(self, db, course_dir):
+        """Does --CourseDirectory.student_id_exclude=X exclude students?"""
+        with open("nbgrader_config.py", "a") as fh:
+            fh.write("""c.CourseDirectory.db_assignments = [dict(name="ps1")]\n""")
+            fh.write("""c.CourseDirectory.db_students = [dict(id="foo"), dict(id="bar"), dict(id="baz")]\n""")
+        self._copy_file(join("files", "submitted-unchanged.ipynb"), join(course_dir, "source", "ps1", "p1.ipynb"))
+        run_nbgrader(["assign", "ps1", "--db", db])
+
+        for student in ["foo", "bar", "baz"]:
+            self._copy_file(join("files", "submitted-unchanged.ipynb"), join(course_dir, "submitted", student, "ps1", "p1.ipynb"))
+        run_nbgrader(["autograde", "ps1", "--db", db])
+        run_nbgrader(["generate_feedback", "ps1", "--db", db, "--CourseDirectory.student_id_exclude=bar,baz"])
+
+        for student in ["foo", "bar", "baz"]:
+            assert exists(join(course_dir, "autograded", "foo", "ps1", "p1.ipynb"))
+
+        assert exists(join(course_dir, "feedback", "foo", "ps1", "p1.html"))
+        assert not exists(join(course_dir, "feedback", "bar", "ps1", "p1.html"))
+        assert not exists(join(course_dir, "feedback", "baz", "ps1", "p1.html"))
+
+
     def test_force(self, db, course_dir):
         """Ensure the force option works properly"""
         with open("nbgrader_config.py", "a") as fh:

nbgrader/tests/apps/test_nbgrader_releasefeedback.py

@@ -68,6 +68,33 @@ def test_single_student(self, db, course_dir, exchange):
         # release feedback shoul overwrite without error
         run_nbgrader(["release_feedback", "ps1", "--Exchange.root={}".format(exchange), '--course', 'abc101'])
 
+    @notwindows
+    def test_student_id_exclude(self, db, course_dir, exchange):
+        """Does --CourseDirectory.student_id_exclude=X exclude students?"""
+        with open("nbgrader_config.py", "a") as fh:
+            fh.write("""c.CourseDirectory.db_assignments = [dict(name="ps1")]\n""")
+            fh.write("""c.CourseDirectory.db_students = [dict(id="foo"), dict(id="bar"), dict(id="baz")]\n""")
+        self._copy_file(join("files", "submitted-unchanged.ipynb"), join(course_dir, "source", "ps1", "p1.ipynb"))
+        run_nbgrader(["assign", "ps1", "--db", db])
+        nb_path = join(course_dir, "submitted", "foo", "ps1", "p1.ipynb")
+        self._copy_file(join("files", "submitted-unchanged.ipynb"), nb_path)
+        self._copy_file(join("files", "timestamp.txt"), join(course_dir, "submitted", "foo", "ps1", "timestamp.txt"))
+        nb_path2 = join(course_dir, "submitted", "bar", "ps1", "p1.ipynb")
+        self._copy_file(join("files", "submitted-changed.ipynb"), nb_path2)
+        self._copy_file(join("files", "timestamp.txt"), join(course_dir, "submitted", "bar", "ps1", "timestamp.txt"))
+
+        run_nbgrader(["autograde", "ps1", "--db", db])
+        run_nbgrader(["generate_feedback", "ps1", "--db", db])
+        run_nbgrader(["release_feedback", "ps1", "--Exchange.root={}".format(exchange), '--course', 'abc101',
+                      "--CourseDirectory.student_id_exclude=bar,baz"]) # baz doesn't exist, test still OK though
+        nb_hash = notebook_hash(nb_path) # foo
+        assert exists(join(exchange, "abc101", "feedback", "{}.html".format(nb_hash)))
+        nb_hash2 = notebook_hash(nb_path2) # bar
+        assert not exists(join(exchange, "abc101", "feedback", "{}.html".format(nb_hash2)))
+        # release feedback should overwrite without error
+        run_nbgrader(["release_feedback", "ps1", "--Exchange.root={}".format(exchange), '--course', 'abc101'])
+
+
     @notwindows
     @pytest.mark.parametrize("groupshared", [False, True])
     def test_permissions(self, db, course_dir, exchange, groupshared):