Reduce the overhead in functools.total_ordering by localizing NotImplemented.
(Sugguested by Serhiy Storchaka)
diff --git a/Lib/functools.py b/Lib/functools.py
index 91e9685..fb2e4bd 100644
--- a/Lib/functools.py
+++ b/Lib/functools.py
@@ -94,80 +94,80 @@
# infinite recursion that could occur when the operator dispatch logic
# detects a NotImplemented result and then calls a reflected method.
-def _gt_from_lt(self, other):
+def _gt_from_lt(self, other, NotImplemented=NotImplemented):
'Return a > b. Computed by @total_ordering from (not a < b) and (a != b).'
op_result = self.__lt__(other)
if op_result is NotImplemented:
return op_result
return not op_result and self != other
-def _le_from_lt(self, other):
+def _le_from_lt(self, other, NotImplemented=NotImplemented):
'Return a <= b. Computed by @total_ordering from (a < b) or (a == b).'
op_result = self.__lt__(other)
return op_result or self == other
-def _ge_from_lt(self, other):
+def _ge_from_lt(self, other, NotImplemented=NotImplemented):
'Return a >= b. Computed by @total_ordering from (not a < b).'
op_result = self.__lt__(other)
if op_result is NotImplemented:
return op_result
return not op_result
-def _ge_from_le(self, other):
+def _ge_from_le(self, other, NotImplemented=NotImplemented):
'Return a >= b. Computed by @total_ordering from (not a <= b) or (a == b).'
op_result = self.__le__(other)
if op_result is NotImplemented:
return op_result
return not op_result or self == other
-def _lt_from_le(self, other):
+def _lt_from_le(self, other, NotImplemented=NotImplemented):
'Return a < b. Computed by @total_ordering from (a <= b) and (a != b).'
op_result = self.__le__(other)
if op_result is NotImplemented:
return op_result
return op_result and self != other
-def _gt_from_le(self, other):
+def _gt_from_le(self, other, NotImplemented=NotImplemented):
'Return a > b. Computed by @total_ordering from (not a <= b).'
op_result = self.__le__(other)
if op_result is NotImplemented:
return op_result
return not op_result
-def _lt_from_gt(self, other):
+def _lt_from_gt(self, other, NotImplemented=NotImplemented):
'Return a < b. Computed by @total_ordering from (not a > b) and (a != b).'
op_result = self.__gt__(other)
if op_result is NotImplemented:
return op_result
return not op_result and self != other
-def _ge_from_gt(self, other):
+def _ge_from_gt(self, other, NotImplemented=NotImplemented):
'Return a >= b. Computed by @total_ordering from (a > b) or (a == b).'
op_result = self.__gt__(other)
return op_result or self == other
-def _le_from_gt(self, other):
+def _le_from_gt(self, other, NotImplemented=NotImplemented):
'Return a <= b. Computed by @total_ordering from (not a > b).'
op_result = self.__gt__(other)
if op_result is NotImplemented:
return op_result
return not op_result
-def _le_from_ge(self, other):
+def _le_from_ge(self, other, NotImplemented=NotImplemented):
'Return a <= b. Computed by @total_ordering from (not a >= b) or (a == b).'
op_result = self.__ge__(other)
if op_result is NotImplemented:
return op_result
return not op_result or self == other
-def _gt_from_ge(self, other):
+def _gt_from_ge(self, other, NotImplemented=NotImplemented):
'Return a > b. Computed by @total_ordering from (a >= b) and (a != b).'
op_result = self.__ge__(other)
if op_result is NotImplemented:
return op_result
return op_result and self != other
-def _lt_from_ge(self, other):
+def _lt_from_ge(self, other, NotImplemented=NotImplemented):
'Return a < b. Computed by @total_ordering from (not a >= b).'
op_result = self.__ge__(other)
if op_result is NotImplemented: