# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1475867886 -7200
# Node ID 3b3bb6a8a762b0a5739b299f6293e99c863290cc
# Parent  985a0cc2522b2929c92568c2c2f627a3fc7e1437
Produce an error when attempting to access an attribute on an unrecognised name.

diff -r 985a0cc2522b -r 3b3bb6a8a762 inspector.py
--- a/inspector.py	Wed Oct 05 17:25:39 2016 +0200
+++ b/inspector.py	Fri Oct 07 21:18:06 2016 +0200
@@ -443,9 +443,8 @@
             branches = tracker.use_attribute(name, attrname)
 
             if not branches:
-                print >>sys.stderr, "In %s, name %s is accessed using %s before an assignment." % (
-                    path, name, attrname)
-                branches = tracker.use_attribute(name, attrname)
+                raise InspectError("Name %s is accessed using %s before an assignment." % (
+                    name, attrname), path, n)
 
             self.record_branches_for_access(branches, name, attrnames)
             access_number = self.record_access_details(name, attrnames, assignment)