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-rw-r--r--Lib/pathlib.py5
-rw-r--r--Lib/test/test_pathlib.py9
-rw-r--r--Misc/NEWS.d/next/Library/2018-06-12-23-30-41.bpo-33660.AdDn5Z.rst2
3 files changed, 15 insertions, 1 deletions
diff --git a/Lib/pathlib.py b/Lib/pathlib.py
index 9f5e27b911..babc443dd3 100644
--- a/Lib/pathlib.py
+++ b/Lib/pathlib.py
@@ -329,7 +329,10 @@ class _PosixFlavour(_Flavour):
# parent dir
path, _, _ = path.rpartition(sep)
continue
- newpath = path + sep + name
+ if path.endswith(sep):
+ newpath = path + name
+ else:
+ newpath = path + sep + name
if newpath in seen:
# Already seen this path
path = seen[newpath]
diff --git a/Lib/test/test_pathlib.py b/Lib/test/test_pathlib.py
index 1589282886..3da35710b9 100644
--- a/Lib/test/test_pathlib.py
+++ b/Lib/test/test_pathlib.py
@@ -2347,6 +2347,15 @@ class PosixPathTest(_BasePathTest, unittest.TestCase):
st = os.stat(join('other_new_file'))
self.assertEqual(stat.S_IMODE(st.st_mode), 0o644)
+ def test_resolve_root(self):
+ current_directory = os.getcwd()
+ try:
+ os.chdir('/')
+ p = self.cls('spam')
+ self.assertEqual(str(p.resolve()), '/spam')
+ finally:
+ os.chdir(current_directory)
+
def test_touch_mode(self):
old_mask = os.umask(0)
self.addCleanup(os.umask, old_mask)
diff --git a/Misc/NEWS.d/next/Library/2018-06-12-23-30-41.bpo-33660.AdDn5Z.rst b/Misc/NEWS.d/next/Library/2018-06-12-23-30-41.bpo-33660.AdDn5Z.rst
new file mode 100644
index 0000000000..cce3dbb1c6
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2018-06-12-23-30-41.bpo-33660.AdDn5Z.rst
@@ -0,0 +1,2 @@
+Fix pathlib.PosixPath to resolve a relative path located on the root
+directory properly.