add check for prev_kw to not be none

vmuriart · vmuriart · commit 7f9d481a8a1b · 2016-07-03T05:35:05.000-07:00
diff --git a/sqlparse/filters/aligned_indent.py b/sqlparse/filters/aligned_indent.py
@@ -112,7 +112,8 @@ def _process_default(self, tlist):
                 _, prev_kw = tidx, token
                 continue
 
-            if token.normalized == 'AND' and prev_kw.normalized == 'BETWEEN':
+            if (token.normalized == 'AND' and prev_kw is not None and
+                        prev_kw.normalized == 'BETWEEN'):
                 _, prev_kw = tidx, token
                 continue
 
