Added .with_name and .with_stem.

newsfragments/+ceb93420.feature.rst

@@ -0,0 +1 @@
+Added .with_name and .with_stem.

path/__init__.py

@@ -52,6 +52,7 @@
 from . import matchers
 from . import masks
 from . import classes
+from .compat.py38 import removesuffix
 
 
 __all__ = ['Path', 'TempDir']
@@ -277,6 +278,14 @@ def stem(self):
         base, ext = self.module.splitext(self.name)
         return base
 
+    def with_stem(self, stem):
+        """Return a new path with the stem changed.
+
+        >>> Path('/home/guido/python.tar.gz').with_stem("foo")
+        Path('/home/guido/foo.gz')
+        """
+        return self.with_name(stem + self.suffix)
+
     @property
     def suffix(self):
         """The file extension, for example ``'.py'``."""
@@ -347,6 +356,14 @@ def drive(self):
         """,
     )
 
+    def with_name(self, name):
+        """Return a new path with the name changed.
+
+        >>> Path('/home/guido/python.tar.gz').with_name("foo.zip")
+        Path('/home/guido/foo.zip')
+        """
+        return self._next_class(removesuffix(self, self.name) + name)
+
     def splitpath(self):
         """Return two-tuple of ``.parent``, ``.name``.
 

path/compat/py38.py

@@ -0,0 +1,13 @@
+import sys
+
+
+if sys.version_info < (3, 9):
+	def removesuffix(self, suffix):
+	    # suffix='' should not call self[:-0].
+	    if suffix and self.endswith(suffix):
+	        return self[:-len(suffix)]
+	    else:
+	        return self[:]
+else:
+    def removesuffix(self, suffix):
+        return self.removesuffix(suffix)