Comment about what's happening when builtin() doesn't return a tuple.

James William Pye · James William Pye · commit b0359ff78e3f · 2010-09-01T21:35:22.000-07:00
diff --git a/postgresql/driver/pq3.py b/postgresql/driver/pq3.py
@@ -242,6 +242,8 @@ def resolve(self,
 		else:
 			typio = builtins(typid)
 			if typio is not None:
+				# If typio is a tuple, it's a constant pair: (pack, unpack)
+				# otherwise, it's an I/O pair constructor.
 				if typio.__class__ is not tuple:
 					typio = typio(typid, self)
 				self._cache[typid] = typio
