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changeset 900:aaf1f1825009

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error if we have multiple expressions on one subterm Ignore-this: f2f7f687ce0cf1f01df300a523f78243
author Drew Perttula <drewp@bigasterisk.com>
date Sun, 09 Jun 2013 09:43:35 +0000
parents 21974e0ef0c4
children 0dacbba70d06
files light9/curvecalc/subterm.py
diffstat 1 files changed, 4 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/light9/curvecalc/subterm.py	Sun Jun 09 09:43:22 2013 +0000
+++ b/light9/curvecalc/subterm.py	Sun Jun 09 09:43:35 2013 +0000
@@ -113,7 +113,10 @@
         """current graph is being passed as an optimization. It should be
         equivalent to use self.graph in here."""
 
-        expr = current.value(self.uri, L9['expression'])
+        objs = list(current.objects(self.uri, L9.expression))
+        if len(objs) > 1:
+            raise ValueError("found multiple expressions for %s: %s" %
+                             (self.uri, objs))
         
         expr = current.value(self.uri, L9['expression'])
         if not expr: