# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1479484027 -3600
# Node ID b062edfbeaab6e1b70fff0a29b78a1e6db5be6bf
# Parent  653ac525f897a52afbd098619a4938d5558eb06c
Improved deduction error messages.

diff -r 653ac525f897 -r b062edfbeaab deducer.py
--- a/deducer.py	Thu Nov 17 21:48:26 2016 +0100
+++ b/deducer.py	Fri Nov 18 16:47:07 2016 +0100
@@ -540,7 +540,7 @@
             referenced_attrs = self.referenced_attrs[location]
 
             if not referenced_attrs:
-                raise DeduceError, repr(location)
+                raise DeduceError("In %s, access via %s to attribute %s (occurrence %d) cannot be identified." % location)
 
             # Record attribute information for each name used on the
             # accessor.