Issue #23641: Cleaned out legacy dunder names from tests and docs.

Fixed 2 to 3 porting bug in pynche.ColorDB.
Added few tests for __truediv__, __floordiv__ and __matmul__.

Tools/clinic/clinic.py

@@ -1831,9 +1831,9 @@ __gt__
 __hash__
 __iadd__
 __iand__
-__idivmod__
 __ifloordiv__
 __ilshift__
+__imatmul__
 __imod__
 __imul__
 __index__
@@ -1850,6 +1850,7 @@ __le__
 __len__
 __lshift__
 __lt__
+__matmul__
 __mod__
 __mul__
 __neg__
@@ -1864,6 +1865,7 @@ __rdivmod__
 __repr__
 __rfloordiv__
 __rlshift__
+__rmatmul__
 __rmod__
 __rmul__
 __ror__

Tools/pynche/ColorDB.py

@@ -23,7 +23,6 @@ color formats, and for calculating other color values.
 import sys
 import re
 from types import *
-import operator
 
 class BadColor(Exception):
     pass
@@ -230,9 +229,8 @@ def triplet_to_rrggbb(rgbtuple):
     return hexname
 
 
-_maxtuple = (256.0,) * 3
 def triplet_to_fractional_rgb(rgbtuple):
-    return list(map(operator.__div__, rgbtuple, _maxtuple))
+    return [x / 256 for x in rgbtuple]
 
 
 def triplet_to_brightness(rgbtuple):