diff --git a/Lib/pathlib.py b/Lib/pathlib.py index c42bde459b3..8ed3c883c60 100644 --- a/Lib/pathlib.py +++ b/Lib/pathlib.py @@ -418,7 +418,12 @@ class _NormalAccessor(_Accessor): unlink = os.unlink - link_to = os.link + if hasattr(os, "link"): + link_to = os.link + else: + @staticmethod + def link_to(self, target): + raise NotImplementedError("os.link() not available on this system") rmdir = os.rmdir diff --git a/Lib/test/test_pathlib.py b/Lib/test/test_pathlib.py index 4543e3773db..b127343982c 100644 --- a/Lib/test/test_pathlib.py +++ b/Lib/test/test_pathlib.py @@ -1672,6 +1672,7 @@ class _BasePathTest(object): self.assertFileNotFound(p.stat) self.assertFileNotFound(p.unlink) + @unittest.skipUnless(hasattr(os, "link"), "os.link() is not present") def test_link_to(self): P = self.cls(BASE) p = P / 'fileA' @@ -1691,6 +1692,15 @@ class _BasePathTest(object): self.assertEqual(os.stat(r).st_size, size) self.assertTrue(q.stat) + @unittest.skipIf(hasattr(os, "link"), "os.link() is present") + def test_link_to_not_implemented(self): + P = self.cls(BASE) + p = P / 'fileA' + # linking to another path. + q = P / 'dirA' / 'fileAA' + with self.assertRaises(NotImplementedError): + p.link_to(q) + def test_rename(self): P = self.cls(BASE) p = P / 'fileA' diff --git a/Misc/NEWS.d/next/Library/2019-11-15-18-06-04.bpo-38811.AmdQ6M.rst b/Misc/NEWS.d/next/Library/2019-11-15-18-06-04.bpo-38811.AmdQ6M.rst new file mode 100644 index 00000000000..0e4a7f5bdf5 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2019-11-15-18-06-04.bpo-38811.AmdQ6M.rst @@ -0,0 +1 @@ +Fix an unhandled exception in :mod:`pathlib` when :meth:`os.link` is missing. Patch by Toke Høiland-Jørgensen.