bpo-38811: Check for presence of os.link method in pathlib (GH-17225)
Commit 6b5b013bcc22 ("bpo-26978: Implement pathlib.Path.link_to (Using
os.link) (GH-12990)") introduced a new link_to method in pathlib. However,
this makes pathlib crash when the 'os' module is missing a 'link' method.
Fix this by checking for the presence of the 'link' method on pathlib
module import, and if it's not present, turn it into a runtime error like
those emitted when there is no lchmod() or symlink().
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
(cherry picked from commit 092435e932dee1802784ec28f39454f50fdd879a)
Co-authored-by: Toke Høiland-Jørgensen <toke@redhat.com>diff --git a/Lib/pathlib.py b/Lib/pathlib.py
index c42bde4..8ed3c88 100644
--- a/Lib/pathlib.py
+++ b/Lib/pathlib.py
@@ -418,7 +418,12 @@
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