clarify that islink only really works if python knows about symlinks (closes #13143)

Patch from Yayoi Ukai.

diff --git a/Doc/library/os.path.rst b/Doc/library/os.path.rst
index 3cc60cbbf9b931939f1ca0f4e9d8260b20c9bc72..ed3aaf4ec74a6cfea8bdbf437259aa88a32de7db 100644 (file)
--- a/Doc/library/os.path.rst
+++ b/Doc/library/os.path.rst
@@ -185,7 +185,7 @@ the :mod:`glob` module.)
 .. function:: islink(path)
 
    Return ``True`` if *path* refers to a directory entry that is a symbolic link.
-   Always ``False`` if symbolic links are not supported.
+   Always ``False`` if symbolic links are not supported by the python runtime.
 
 
 .. function:: ismount(path)