@@ -1608,6 +1608,7 @@ def which(cmd, mode=os.F_OK | os.X_OK, path=None):
     path.
 
     """
+    cmd = os.fspath(cmd)
     use_bytes = isinstance(cmd, bytes)
 
     # If we're given a path with a directory part, look it up directly rather
 
@@ -2614,6 +2614,10 @@ def test_basic(self):
         rv = shutil.which(self.file, path=self.dir)
         self.assertEqual(rv, self.filepath)
 
+    def test_pathlike_cmd(self):
+        rv = shutil.which(FakePath(self.file), path=self.dir)
+        self.assertEqual(rv, self.filepath)
+
     def test_absolute_cmd(self):
         # When given the fully qualified path to an executable that exists,
         # it should be returned.
 
@@ -0,0 +1,2 @@
+Fix :func:`shutil.which` for path-like command objects whose
+:meth:`~os.PathLike.__fspath__` method returns :class:`bytes`.
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+Fix :func:`shutil.which` for path-like command objects whose
	`2`	+:meth:`~os.PathLike.__fspath__` method returns :class:`bytes`.