Add .group method.

Ref #214

path/__init__.py

@@ -1259,7 +1259,7 @@ def access(self, *args, **kwargs):
         """
         return os.access(self, *args, **kwargs)
 
-    def stat(self):
+    def stat(self, *, follow_symlinks=True):
         """
         Perform a ``stat()`` system call on this path.
 
@@ -1268,7 +1268,7 @@ def stat(self):
 
         .. seealso:: :meth:`lstat`, :func:`os.stat`
         """
-        return os.stat(self)
+        return os.stat(self, follow_symlinks=follow_symlinks)
 
     def lstat(self):
         """
@@ -1327,6 +1327,15 @@ def __get_owner_not_implemented(self):  # pragma: nocover
         .. seealso:: :meth:`get_owner`""",
     )
 
+    if 'grp' in globals():  # pragma: no cover
+
+        def group(self, *, follow_symlinks=True):
+            """
+            Return the group name of the file gid.
+            """
+            gid = self.stat(follow_symlinks=follow_symlinks).st_gid
+            return grp.getgrgid(gid).gr_name
+
     if hasattr(os, 'statvfs'):
 
         def statvfs(self):

test_path.py

@@ -300,6 +300,11 @@ def test_removedirs_p(self, tmpdir):
         # TODO: shouldn't sub get removed?
         # assert not (dir / 'sub').is_dir()
 
+    @pytest.mark.skipif("not hasattr(Path, 'group')")
+    def test_group(self, tmpdir):
+        file = Path(tmpdir).joinpath('file').touch()
+        assert isinstance(file.group(), str)
+
 
 class TestReadWriteText:
     def test_read_write(self, tmpdir):