The quote function should return a string suitable for dropping into a

query string.  This fixes a bug where bool types sometimes returned with
a string that could not be dropped into a query.

src/interfaces/python/pg.py

@@ -29,7 +29,7 @@ def _quote(d, t):
 
 	if t == 'bool':
 		# Can't run upper() on these
-		if d in (0, 1): return ('f', 't')[d]
+		if d in (0, 1): return ("'f'", "'t'")[d]
 
 		if string.upper(d) in ['T', 'TRUE', 'Y', 'YES', '1', 'ON']:
 			return "'t'"