Fall back to zope.tales.tales, if Products.PageTemplates.TALES is not found.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@26629 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Constraint/TALESConstraint.py

@@ -30,7 +30,12 @@ import sys
 
 from Products.CMFCore.Expression import Expression
 from ZODB.POSException import ConflictError
-from Products.PageTemplates.TALES import CompilerError
+try:
+  # Zope 2.8
+  from Products.PageTemplates.TALES import CompilerError
+except ImportError:
+  # Zope 2.12
+  from zope.tales.tales import CompilerError
 from zLOG import LOG, PROBLEM
 
 from Constraint import Constraint