Prevent chainedInequality caching for inequalities that already have …

…3 terms.
bertrandhaut · Nov 11, 2016 · 50f10b6 · 50f10b6
1 parent f5393f6
commit 50f10b6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pyomo/core/base/expr_coopr3.py b/pyomo/core/base/expr_coopr3.py
@@ -467,7 +467,7 @@ def __getstate__(self):
     def __nonzero__(self):
         if generate_relational_expression.chainedInequality is not None:
             raise TypeError(chainedInequalityErrorMessage())
-        if not self.is_constant():
+        if not self.is_constant() and len(self._args) == 2:
             generate_relational_expression.call_info \
                 = traceback.extract_stack(limit=2)[-2]
             generate_relational_expression.chainedInequality = self