https://github.com/python/cpython/commit/71fc4c66d3e675a5481b6b76e6c707c9b6f1e0e0
commit: 71fc4c66d3e675a5481b6b76e6c707c9b6f1e0e0
branch: main
author: Russell Keith-Magee <[email protected]>
committer: freakboy3742 <[email protected]>
date: 2026-06-02T06:25:46+08:00
summary:
gh-150644: Tag Apple system log messages as public. (#150645)
macOS 26 changed the default visibility of "dynamic" system messages. This
changes the logging strategy to tag all messages as "public" so they are
visible in the system log without special configuration.
files:
A Misc/NEWS.d/next/macOS/2026-05-31-10-40-00.gh-issue-150644.zLWyjj.rst
M Python/pylifecycle.c
diff --git
a/Misc/NEWS.d/next/macOS/2026-05-31-10-40-00.gh-issue-150644.zLWyjj.rst
b/Misc/NEWS.d/next/macOS/2026-05-31-10-40-00.gh-issue-150644.zLWyjj.rst
new file mode 100644
index 000000000000000..7452a7c765c0a86
--- /dev/null
+++ b/Misc/NEWS.d/next/macOS/2026-05-31-10-40-00.gh-issue-150644.zLWyjj.rst
@@ -0,0 +1,3 @@
+When system logging is enabled (with ``config.use_system_logger``, messages
+are now tagged as public. This allows the macOS 26 system logger to view
+messages without special configuration.
diff --git a/Python/pylifecycle.c b/Python/pylifecycle.c
index 182233329498076..97511d2daf2c8f7 100644
--- a/Python/pylifecycle.c
+++ b/Python/pylifecycle.c
@@ -3327,7 +3327,9 @@ apple_log_write_impl(PyObject *self, PyObject *args)
// Pass the user-provided text through explicit %s formatting
// to avoid % literals being interpreted as a formatting directive.
- os_log_with_type(OS_LOG_DEFAULT, logtype, "%s", text);
+ // Using {public} ensures "dynamic" string messages are visible
+ // in the log without special configuration.
+ os_log_with_type(OS_LOG_DEFAULT, logtype, "%{public}s", text);
Py_RETURN_NONE;
}
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