gh-133875: Remove deprecated pathlib.PurePath.is_reserved

Author: sobolevn

Doc/library/pathlib.rst

@@ -542,20 +542,6 @@ Pure paths provide the following methods and properties:
       Passing additional arguments is deprecated; if supplied, they are joined
       with *other*.
 
-.. method:: PurePath.is_reserved()
-
-   With :class:`PureWindowsPath`, return ``True`` if the path is considered
-   reserved under Windows, ``False`` otherwise.  With :class:`PurePosixPath`,
-   ``False`` is always returned.
-
-   .. versionchanged:: 3.13
-      Windows path names that contain a colon, or end with a dot or a space,
-      are considered reserved. UNC paths may be reserved.
-
-   .. deprecated-removed:: 3.13 3.15
-      This method is deprecated; use :func:`os.path.isreserved` to detect
-      reserved paths on Windows.
-
 .. method:: PurePath.joinpath(*pathsegments)
 
    Calling this method is equivalent to combining the path with each of

Doc/whatsnew/3.15.rst

@@ -177,6 +177,10 @@ Porting to Python 3.15
 
   (Contributed by Serhiy Storchaka in :gh:`133595`.)
 
+* Removed deprecated :meth:`!pathlib.PurePath.is_reserved`.
+  Use :func:`os.path.isreserved` to detect reserved paths on Windows.
+  (Contributed by Nikita Sobolev in :gh:`133875`.)
+
 Deprecated C APIs
 -----------------
 

Lib/pathlib/__init__.py

@@ -518,18 +518,6 @@ def is_absolute(self):
             return False
         return self.parser.isabs(self)
 
-    def is_reserved(self):
-        """Return True if the path contains one of the special names reserved
-        by the system, if any."""
-        import warnings
-        msg = ("pathlib.PurePath.is_reserved() is deprecated and scheduled "
-               "for removal in Python 3.15. Use os.path.isreserved() to "
-               "detect reserved paths on Windows.")
-        warnings._deprecated("pathlib.PurePath.is_reserved", msg, remove=(3, 15))
-        if self.parser is ntpath:
-            return self.parser.isreserved(self)
-        return False
-
     def as_uri(self):
         """Return the path as a URI."""
         import warnings

Lib/test/test_pathlib/test_pathlib.py

@@ -539,12 +539,6 @@ def test_with_stem_empty(self):
         self.assertRaises(ValueError, P('a/b').with_stem, '')
         self.assertRaises(ValueError, P('a/b').with_stem, '.')
 
-    def test_is_reserved_deprecated(self):
-        P = self.cls
-        p = P('a/b')
-        with self.assertWarns(DeprecationWarning):
-            p.is_reserved()
-
     def test_full_match_case_sensitive(self):
         P = self.cls
         self.assertFalse(P('A.py').full_match('a.PY', case_sensitive=True))

Misc/NEWS.d/next/Library/2025-05-11-11-39-05.gh-issue-133875.pUar3l.rst

@@ -0,0 +1,2 @@
+Removed deprecated :meth:`!pathlib.PurePath.is_reserved`. Use
+:func:`os.path.isreserved` to detect reserved paths on Windows.