membership.create() checks for joinable and player limit; factory creates joinable lexicons by default

amanuensis/backend/membership.py

@@ -42,7 +42,8 @@ def create(
 
     # get reference to lexicon for next few checks
     lex: Lexicon = db(
-        select(Lexicon).where(Lexicon.id == lexicon_id)
+        select(Lexicon)
+        .where(Lexicon.id == lexicon_id)
     ).scalar_one_or_none()
 
     # Verify lexicon is joinable; current no Lexicons are joinable so this is commented out
@@ -52,8 +53,11 @@ def create(
     # Verify lexicon is not full
     if lex.player_limit:
         if (
-            db(select(func.count()).where(Membership.lexicon_id == lexicon_id)).scalar()
-            >= lex.player_limit
+        db(
+            select(func.count())
+            .where(Membership.lexicon_id == lexicon_id)
+        ).scalar()
+        >= lex.player_limit
         ):
             raise ArgumentError("Can't join: Lexicon is full")