gh-102302 Micro-optimize `inspect.Parameter.__hash__` (#102303)

diff --git a/Lib/inspect.py b/Lib/inspect.py
index 8bb3a375735af6ac586979d37613e2f1d8685065..166667c62cdccf84bd003d488a59647e362c5870 100644 (file)
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -2805,7 +2805,7 @@ class Parameter:
         return '<{} "{}">'.format(self.__class__.__name__, self)
 
     def __hash__(self):
-        return hash((self.name, self.kind, self.annotation, self.default))
+        return hash((self._name, self._kind, self._annotation, self._default))
 
     def __eq__(self, other):
         if self is other:

diff --git a/Misc/NEWS.d/next/Library/2023-03-04-14-46-47.gh-issue-102302.-b_s6Z.rst b/Misc/NEWS.d/next/Library/2023-03-04-14-46-47.gh-issue-102302.-b_s6Z.rst
new file mode 100644 (file)
index 0000000..aaf4e62
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-03-04-14-46-47.gh-issue-102302.-b_s6Z.rst
@@ -0,0 +1 @@
+Micro-optimise hashing of :class:`inspect.Parameter`, reducing the time it takes to hash an instance by around 40%.