https://github.com/python/cpython/commit/b41e7b1e022dcf4f56b440df4f29d45b1c766019
commit: b41e7b1e022dcf4f56b440df4f29d45b1c766019
branch: 3.13
author: Łukasz Langa <luk...@langa.pl>
committer: ambv <luk...@langa.pl>
date: 2025-05-20T22:15:43+02:00
summary:
[3.13] gh-128066: Properly handle history file writes for RO fs on PyREPL
(gh-134380) (gh-134386)
(cherry picked from commit c91ad5da9d92eac4718e4da8d53689c3cc24535e)
Co-authored-by: Chris Patti <f...@feoh.org>
Co-authored-by: Łukasz Langa <luk...@langa.pl>
files:
A
Misc/NEWS.d/next/Core_and_Builtins/2025-05-20-14-41-50.gh-issue-128066.qzzGfv.rst
M Lib/site.py
diff --git a/Lib/site.py b/Lib/site.py
index 89a81c55cb63dd..aedf36399c37ad 100644
--- a/Lib/site.py
+++ b/Lib/site.py
@@ -75,6 +75,7 @@
import _sitebuiltins
import io
import stat
+import errno
# Prefixes for site-packages; add additional prefixes like /usr/local here
PREFIXES = [sys.prefix, sys.exec_prefix]
@@ -576,6 +577,11 @@ def write_history():
# home directory does not exist or is not writable
# https://bugs.python.org/issue19891
pass
+ except OSError:
+ if errno.EROFS:
+ pass # gh-128066: read-only file system
+ else:
+ raise
atexit.register(write_history)
diff --git
a/Misc/NEWS.d/next/Core_and_Builtins/2025-05-20-14-41-50.gh-issue-128066.qzzGfv.rst
b/Misc/NEWS.d/next/Core_and_Builtins/2025-05-20-14-41-50.gh-issue-128066.qzzGfv.rst
new file mode 100644
index 00000000000000..f78190276851b4
--- /dev/null
+++
b/Misc/NEWS.d/next/Core_and_Builtins/2025-05-20-14-41-50.gh-issue-128066.qzzGfv.rst
@@ -0,0 +1,3 @@
+Fixes an edge case where PyREPL improperly threw an error when Python is
+invoked on a read only filesystem while trying to write history file
+entries.
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