append some character, in this case a '_', if the course number is really a full-on number. The Wiki library interprets this incorrectly - to date we've always used non-numerical values.

lms/djangoapps/course_wiki/views.py

@@ -30,6 +30,19 @@ def course_wiki_redirect(request, course_id):
     course = get_course_by_id(course_id)
     
     course_slug = course.wiki_slug
+
+
+    # cdodge: fix for cases where self.location.course can be interpreted as an number rather than
+    # a string. We're seeing in Studio created courses that people often will enter in a stright number
+    # for 'course' (e.g. 201). This Wiki library expects a string to "do the right thing". We haven't noticed this before
+    # because - to now - 'course' has always had non-numeric characters in them
+    try:
+        float(course_slug)
+        # if the float() doesn't throw an exception, that means it's a number
+        course_slug = course_slug + "_"
+    except:
+        pass
+
     
     valid_slug = True
     if not course_slug: