Tentative fix for issue #437. I added a new set of rules in ifelsestmt.py to check against for offsets. Seems to have fixed current issue. The result output is switching nested if-else-if-else-etc to a chain of if-elif-elif now, but semantically seems correct.

Author: andrem-eberle

uncompyle6/parsers/reducecheck/ifelsestmt.py

@@ -81,6 +81,16 @@
                 "come_froms",
             ),
         ),
+        (
+            'ifelsestmtc',
+            (
+                'testexpr',
+                'c_stmts_opt',
+                'JUMP_FORWARD',
+                'else_suite',
+                'come_froms'
+            ),
+        ),
         (
             "ifelsestmt",
             (