Fixed a base propogation bug

git-svn-id: file:///svnroot/ejpi/trunk@5 df6cc7de-23d0-4ae0-bb86-c17aa67b2a9d

diff --git a/src/operation.py b/src/operation.py
index 165cac3..413f4d7 100644 (file)
--- a/src/operation.py
+++ b/src/operation.py
@@ -267,6 +267,7 @@ class Function(Operation):
 
        def __init__(self, *args, **kwd):
                super(Function, self).__init__()
+               self.base = None
                self._args = args
                self._kwd = kwd
                self.__simple = self.__simplify()