Changeset 5179:60ccc254bb46

Timestamp:

06/21/07 07:32:54 (6 years ago)

Author:

'Martin Albrecht <malb@…

Branch:

default

Message:

allow adding TermOrder? to None (result is is self) because it makes coding with it so much easier

File:

• sage/rings/polynomial/term_order.py (modified) (1 diff)

sage/rings/polynomial/term_order.py

@@ -661 +661 @@
             deglex(2),degrevlex(3),neglex(3) term order
         """
+        if other is None:
+            return self
+        
         if not isinstance(other,TermOrder):
             other = TermOrder(other)