Defer faster, no longer error for courses than we don't know of

didier/cogs/school.py

@@ -47,12 +47,12 @@ class School(commands.Cog):
         Schedules are personalized based on your roles in the server. If your schedule doesn't look right, make sure
         that you've got the correct roles selected. In case you do, ping D STIJN.
         """
-        if day_dt is None:
-            day_dt = date.today()
-
-        day_dt = skip_weekends(day_dt)
-
         async with ctx.typing():
+            if day_dt is None:
+                day_dt = date.today()
+
+            day_dt = skip_weekends(day_dt)
+
             try:
                 member_instance = to_main_guild_member(self.client, ctx.author)
 

didier/data/embeds/schedules.py

@@ -190,8 +190,7 @@ async def parse_schedule_from_content(content: str, *, database_session: AsyncSe
         if code not in course_codes:
             course = await get_course_by_code(database_session, code)
             if course is None:
-                # raise ValueError(f"Unable to find course with code {code} (event {event.name})")  # noqa: E800
-                continue  # TODO uncomment the line above after all courses have been added
+                continue
 
             course_codes[code] = course