Changeset 3013

Timestamp:

Sep 15, 2010 1:19:57 PM (9 years ago)

Author:

jwatson

Message:

Improving an error diagnostic message in the LP writer.

File:

• coopr.pyomo/trunk/coopr/pyomo/io/cpxlp.py (modified) (1 diff)

coopr.pyomo/trunk/coopr/pyomo/io/cpxlp.py

@@ -101 +101 @@
     def _no_label_error ( var ):
         msg  = "Unable to find label for variable '%s'.\n"                    \
-        'Possibly uninstantiated model.  Do any constraint or objective '     \
-        'rules reference the original Model() object, as opposed to the '     \
-        'passed model object?'
+        'Possibly uninstantiated model.  Do any constraint or objective  '     \
+        'rules reference the original Model() object, as opposed to the  '     \
+        'passed model object? Alternatively, if you are developing code, '     \
+        'has the model instance been pre-processed?'
 
         raise ValueError, msg % str(var)