run total_ordering() tests, and fix the function (default comparisons shouldn't be considered)
diff --git a/Lib/functools.py b/Lib/functools.py
index bd1334b..7ce6bc2 100644
--- a/Lib/functools.py
+++ b/Lib/functools.py
@@ -65,6 +65,7 @@
return partial(update_wrapper, wrapped=wrapped,
assigned=assigned, updated=updated)
+_object_defaults = {object.__lt__, object.__le__, object.__gt__, object.__ge__}
def total_ordering(cls):
"""Class decorator that fills in missing ordering methods"""
convert = {
@@ -81,7 +82,9 @@
('__gt__', lambda self, other: not other >= self),
('__lt__', lambda self, other: not self >= other)]
}
- roots = set(dir(cls)) & set(convert)
+ roots = (set(dir(cls)) & set(convert))
+ # Remove default comparison operations defined on object.
+ roots -= {meth for meth in roots if getattr(cls, meth) in _object_defaults}
if not roots:
raise ValueError('must define at least one ordering operation: < > <= >=')
root = max(roots) # prefer __lt__ to __le__ to __gt__ to __ge__