pylint fixing

cms/djangoapps/contentstore/views/__init__.py

 # pylint: disable=W0401, W0511
 
+"All view functions for contentstore, broken out into submodules"
+
 # Disable warnings about import from wildcard
 # All files below declare exports with __all__
 from .assets import *

cms/djangoapps/contentstore/views/assets.py

@@ -56,15 +56,15 @@ def assets_to_json_dict(assets):
         thumbnail = asset.get("thumbnail_location")
         if thumbnail:
             obj["thumbnail"] = thumbnail
-        idInfo = asset.get("_id")
-        if idInfo:
+        id_info = asset.get("_id")
+        if id_info:
             obj["id"] = "/{tag}/{org}/{course}/{revision}/{category}/{name}".format(
-                org=idInfo.get("org", ""),
-                course=idInfo.get("course", ""),
-                revision=idInfo.get("revision", ""),
-                tag=idInfo.get("tag", ""),
-                category=idInfo.get("category", ""),
-                name=idInfo.get("name", ""),
+                org=id_info.get("org", ""),
+                course=id_info.get("course", ""),
+                revision=id_info.get("revision", ""),
+                tag=id_info.get("tag", ""),
+                category=id_info.get("category", ""),
+                name=id_info.get("name", ""),
             )
         ret.append(obj)
     return ret

cms/djangoapps/contentstore/views/component.py

@@ -234,7 +234,7 @@ def assignment_type_update(request, org, course, category, name):
     '''
     location = Location(['i4x', org, course, category, name])
     if not has_access(request.user, location):
-        raise HttpResponseForbidden()
+        return HttpResponseForbidden()
 
     if request.method == 'GET':
         return JsonResponse(CourseGradingModel.get_section_grader_type(location))

cms/djangoapps/contentstore/views/course.py

 """
 Views related to operations on course objects
 """
+#pylint: disable=W0402
 import json
 import random
 import string
@@ -91,7 +92,9 @@ def course_index(request, org, course, name):
 @login_required
 @expect_json
 def create_new_course(request):
-
+    """
+    Create a new course
+    """
     if not is_user_in_creator_group(request.user):
         raise PermissionDenied()
 
@@ -401,15 +404,19 @@ def course_advanced_updates(request, org, course, name):
             return JsonResponse(CourseMetadata.update_from_json(location,
                                                                 request_body,
                                                                 filter_tabs=filter_tabs))
-        except (TypeError, ValueError) as e:
-            return HttpResponseBadRequest("Incorrect setting format. " + str(e), content_type="text/plain")
+        except (TypeError, ValueError) as err:
+            return HttpResponseBadRequest("Incorrect setting format. " + str(err), content_type="text/plain")
 
 
 class TextbookValidationError(Exception):
+    "An error thrown when a textbook input is invalid"
     pass
 
 
 def validate_textbooks_json(text):
+    """
+    Validate the given text as representing a single PDF textbook
+    """
     try:
         textbooks = json.loads(text)
     except ValueError:
@@ -426,7 +433,10 @@ def validate_textbooks_json(text):
     return textbooks
 
 
-def validate_textbook_json(textbook, used_ids=()):
+def validate_textbook_json(textbook):
+    """
+    Validate the given text as representing a list of PDF textbooks
+    """
     if isinstance(textbook, basestring):
         try:
             textbook = json.loads(textbook)
@@ -443,6 +453,10 @@ def validate_textbook_json(textbook, used_ids=()):
 
 
 def assign_textbook_id(textbook, used_ids=()):
+    """
+    Return an ID that can be assigned to a textbook
+    and doesn't match the used_ids
+    """
     tid = Location.clean(textbook["tab_title"])
     if not tid[0].isdigit():
         # stick a random digit in front
@@ -471,8 +485,8 @@ def textbook_index(request, org, course, name):
         elif request.method == 'POST':
             try:
                 textbooks = validate_textbooks_json(request.body)
-            except TextbookValidationError as e:
-                return JsonResponse({"error": e.message}, status=400)
+            except TextbookValidationError as err:
+                return JsonResponse({"error": err.message}, status=400)
 
             tids = set(t["id"] for t in textbooks if "id" in t)
             for textbook in textbooks:
@@ -518,8 +532,8 @@ def create_textbook(request, org, course, name):
 
     try:
         textbook = validate_textbook_json(request.body)
-    except TextbookValidationError as e:
-        return JsonResponse({"error": e.message}, status=400)
+    except TextbookValidationError as err:
+        return JsonResponse({"error": err.message}, status=400)
     if not textbook.get("id"):
         tids = set(t["id"] for t in course_module.pdf_textbooks if "id" in t)
         textbook["id"] = assign_textbook_id(textbook, tids)
@@ -566,8 +580,8 @@ def textbook_by_id(request, org, course, name, tid):
     elif request.method in ('POST', 'PUT'):
         try:
             new_textbook = validate_textbook_json(request.body)
-        except TextbookValidationError as e:
-            return JsonResponse({"error": e.message}, status=400)
+        except TextbookValidationError as err:
+            return JsonResponse({"error": err.message}, status=400)
         new_textbook["id"] = tid
         if textbook:
             i = course_module.pdf_textbooks.index(textbook)

cms/djangoapps/contentstore/views/preview.py

@@ -68,7 +68,7 @@ def preview_dispatch(request, preview_id, location, dispatch=None):
 def preview_component(request, location):
     # TODO (vshnayder): change name from id to location in coffee+html as well.
     if not has_access(request.user, location):
-        raise HttpResponseForbidden()
+        return HttpResponseForbidden()
 
     component = modulestore().get_item(location)
 

cms/djangoapps/contentstore/views/user.py

@@ -23,13 +23,11 @@ def user_author_string(user):
     If the first and last names are blank, uses the username instead.
     Assumes that the email is not blank.
     '''
-    f = user.first_name
-    l = user.last_name
-    if f == '' and l == '':
-        f = user.username
-    return '{first} {last} <{email}>'.format(first=f,
-                                             last=l,
-                                             email=user.email)
+    if not user.first_name and not user.last_name:
+        name = user.username
+    else:
+        name = "{0} {1}".format(user.first_name, user.last_name)
+    return "{name} <{email}>".format(name=name, email=user.email)
 
 
 @login_required