Fix quality failures with new edx-lint version

edx_proctoring/admin.py

@@ -107,8 +107,7 @@ class ReviewListFilter(admin.SimpleListFilter):
             return queryset.filter(reviewed_by__isnull=True)
         elif self.value() == 'all_unreviewed_failures':
             return queryset.filter(reviewed_by__isnull=True, review_status='Suspicious')
-        else:
-            return queryset
+        return queryset
 
 
 class ProctoredExamListFilter(admin.SimpleListFilter):
@@ -252,25 +251,22 @@ class ProctoredExamSoftwareSecureReviewAdmin(admin.ModelAdmin):
         """Return course_id associated with review"""
         if obj.exam:
             return obj.exam.course_id
-        else:
-            exam = self._get_exam_from_attempt_code(obj.attempt_code)
-            return exam.exam_name if exam else '(none)'
+        exam = self._get_exam_from_attempt_code(obj.attempt_code)
+        return exam.exam_name if exam else '(none)'
 
     def exam_name_for_review(self, obj):
         """Return course_id associated with review"""
         if obj.exam:
             return obj.exam.exam_name
-        else:
-            exam = self._get_exam_from_attempt_code(obj.attempt_code)
-            return exam.exam_name if exam else '(none)'
+        exam = self._get_exam_from_attempt_code(obj.attempt_code)
+        return exam.exam_name if exam else '(none)'
 
     def student_username_for_review(self, obj):
         """Return username of student who took the test"""
         if obj.student:
             return obj.student.username
-        else:
-            (attempt_obj, __) = locate_attempt_by_attempt_code(obj.attempt_code)
-            return attempt_obj.user.username if attempt_obj else '(None)'
+        (attempt_obj, __) = locate_attempt_by_attempt_code(obj.attempt_code)
+        return attempt_obj.user.username if attempt_obj else '(None)'
 
     list_display = [
         'course_id_for_review',
@@ -290,7 +286,7 @@ class ProctoredExamSoftwareSecureReviewAdmin(admin.ModelAdmin):
         """ Allow deletes """
         return True
 
-    def save_model(self, request, review, form, change):
+    def save_model(self, request, review, form, change):  # pylint: disable=arguments-differ
         """
         Override callback so that we can inject the user_id that made the change
         """
@@ -306,7 +302,7 @@ class ProctoredExamSoftwareSecureReviewAdmin(admin.ModelAdmin):
             del form.base_fields['video_url']
         return form
 
-    def lookup_allowed(self, key, value):
+    def lookup_allowed(self, key, value):  # pylint: disable=arguments-differ
         if key == 'exam__course_id':
             return True
         return super(ProctoredExamSoftwareSecureReviewAdmin, self).lookup_allowed(key, value)
@@ -363,8 +359,7 @@ class ExamAttemptFilterByCourseId(admin.SimpleListFilter):
         """
         if self.value():
             return queryset.filter(proctored_exam__course_id=self.value())
-        else:
-            return queryset
+        return queryset
 
 
 class ProctoredExamAttemptForm(forms.ModelForm):

edx_proctoring/api.py

@@ -56,6 +56,8 @@ log = logging.getLogger(__name__)
 
 SHOW_EXPIRY_MESSAGE_DURATION = 1 * 60  # duration within which expiry message is shown for a timed-out exam
 
+APPROVED_STATUS = 'approved'
+
 
 def create_exam(course_id, content_id, exam_name, time_limit_mins, due_date=None,
                 is_proctored=True, is_practice_exam=False, external_id=None, is_active=True, hide_after_due=False):
@@ -1762,7 +1764,7 @@ def _get_proctored_exam_view(exam, context, exam_id, user_id, course_id):
         return None
     elif attempt_status in [ProctoredExamStudentAttemptStatus.created,
                             ProctoredExamStudentAttemptStatus.download_software_clicked]:
-        if context.get('verification_status') is not 'approved':
+        if context.get('verification_status') is not APPROVED_STATUS:
             # if the user has not id verified yet, show them the page that requires them to do so
             student_view_template = 'proctored_exam/id_verification.html'
         else:
@@ -1879,5 +1881,4 @@ def get_student_view(user_id, course_id, content_id,
 
     if sub_view_func:
         return sub_view_func(exam, context, exam_id, user_id, course_id)
-    else:
-        return None
+    return None

edx_proctoring/backends/tests/test_backend.py

@@ -13,6 +13,8 @@ from edx_proctoring.backends.backend import ProctoringBackendProvider
 from edx_proctoring.backends.null import NullBackendProvider
 from edx_proctoring.backends.mock import MockProctoringBackendProvider
 
+# pragma pylint: disable=useless-super-delegation
+
 
 class TestBackendProvider(ProctoringBackendProvider):
     """

edx_proctoring/models.py

@@ -304,7 +304,7 @@ class ProctoredExamReviewPolicyHistory(TimeStampedModel):
         db_table = 'proctoring_proctoredexamreviewpolicyhistory'
         verbose_name = 'proctored exam review policy history'
 
-    def delete(self, *args, **kwargs):
+    def delete(self, *args, **kwargs):  # pylint: disable=arguments-differ
         """
         Don't allow deletions!
         """
@@ -747,7 +747,7 @@ class ProctoredExamStudentAllowance(TimeStampedModel):
         user_id = None
 
         # see if key is a tuple, if it is, then the first element is the key
-        if isinstance(key, tuple) and len(key) > 0:
+        if isinstance(key, tuple) and len(key) > 0:  # pylint: disable=len-as-condition
             key = key[0]
 
         if not cls.is_allowance_value_valid(key, value):

edx_proctoring/tests/test_models.py

@@ -21,6 +21,8 @@ from .utils import (
     LoggedInTestCase
 )
 
+# pragma pylint: disable=useless-super-delegation
+
 
 class ProctoredExamModelTests(LoggedInTestCase):
     """

edx_proctoring/views.py

@@ -63,11 +63,10 @@ def require_staff(func):
     def wrapped(request, *args, **kwargs):  # pylint: disable=missing-docstring
         if request.user.is_staff:
             return func(request, *args, **kwargs)
-        else:
-            return Response(
-                status=status.HTTP_403_FORBIDDEN,
-                data={"detail": "Must be a Staff User to Perform this request."}
-            )
+        return Response(
+            status=status.HTTP_403_FORBIDDEN,
+            data={"detail": "Must be a Staff User to Perform this request."}
+        )
     return wrapped
 
 
@@ -96,11 +95,10 @@ def require_course_or_global_staff(func):
                     )
             if instructor_service.is_course_staff(request.user, course_id):
                 return func(request, *args, **kwargs)
-            else:
-                return Response(
-                    status=status.HTTP_403_FORBIDDEN,
-                    data={"detail": _("Must be a Staff User to Perform this request.")}
-                )
+            return Response(
+                status=status.HTTP_403_FORBIDDEN,
+                data={"detail": _("Must be a Staff User to Perform this request.")}
+            )
 
     return wrapped
 
@@ -191,11 +189,10 @@ class ProctoredExamView(AuthenticatedAPIView):
                 hide_after_due=request.data.get('hide_after_due', None),
             )
             return Response({'exam_id': exam_id})
-        else:
-            return Response(
-                status=status.HTTP_400_BAD_REQUEST,
-                data=serializer.errors
-            )
+        return Response(
+            status=status.HTTP_400_BAD_REQUEST,
+            data=serializer.errors
+        )
 
     @method_decorator(require_staff)
     def put(self, request):