https://github.com/python/cpython/commit/b08570c90eb9fa2e2ee4429909b14240b7a427d4
commit: b08570c90eb9fa2e2ee4429909b14240b7a427d4
branch: main
author: Malcolm Smith <[email protected]>
committer: freakboy3742 <[email protected]>
date: 2024-10-25T08:35:41+08:00
summary:
gh-125942: Android: set stdout to `errors="backslashreplace"` (#125943)
Android stdout/err streams now use `backslashreplace` encoding to ensure
readability of the Android log.
files:
A
Misc/NEWS.d/next/Core_and_Builtins/2024-10-24-22-43-03.gh-issue-125942.3UQht1.rst
M Lib/_android_support.py
M Lib/test/test_android.py
diff --git a/Lib/_android_support.py b/Lib/_android_support.py
index 353b34fa36aca4..7572745c851847 100644
--- a/Lib/_android_support.py
+++ b/Lib/_android_support.py
@@ -31,16 +31,19 @@ def init_streams(android_log_write, stdout_prio,
stderr_prio):
logcat = Logcat(android_log_write)
sys.stdout = TextLogStream(
- stdout_prio, "python.stdout", sys.stdout.fileno(),
- errors=sys.stdout.errors)
+ stdout_prio, "python.stdout", sys.stdout.fileno())
sys.stderr = TextLogStream(
- stderr_prio, "python.stderr", sys.stderr.fileno(),
- errors=sys.stderr.errors)
+ stderr_prio, "python.stderr", sys.stderr.fileno())
class TextLogStream(io.TextIOWrapper):
def __init__(self, prio, tag, fileno=None, **kwargs):
+ # The default is surrogateescape for stdout and backslashreplace for
+ # stderr, but in the context of an Android log, readability is more
+ # important than reversibility.
kwargs.setdefault("encoding", "UTF-8")
+ kwargs.setdefault("errors", "backslashreplace")
+
super().__init__(BinaryLogStream(prio, tag, fileno), **kwargs)
self._lock = RLock()
self._pending_bytes = []
diff --git a/Lib/test/test_android.py b/Lib/test/test_android.py
index 2ef9f10fdcc1cc..076190f7572045 100644
--- a/Lib/test/test_android.py
+++ b/Lib/test/test_android.py
@@ -123,13 +123,10 @@ def test_str(self):
self.assertIs(stream.readable(), False)
self.assertEqual(stream.fileno(), fileno)
self.assertEqual("UTF-8", stream.encoding)
+ self.assertEqual("backslashreplace", stream.errors)
self.assertIs(stream.line_buffering, True)
self.assertIs(stream.write_through, False)
- # stderr is backslashreplace by default; stdout is configured
- # that way by libregrtest.main.
- self.assertEqual("backslashreplace", stream.errors)
-
def write(s, lines=None, *, write_len=None):
if write_len is None:
write_len = len(s)
diff --git
a/Misc/NEWS.d/next/Core_and_Builtins/2024-10-24-22-43-03.gh-issue-125942.3UQht1.rst
b/Misc/NEWS.d/next/Core_and_Builtins/2024-10-24-22-43-03.gh-issue-125942.3UQht1.rst
new file mode 100644
index 00000000000000..d1b1ecd2a724ab
--- /dev/null
+++
b/Misc/NEWS.d/next/Core_and_Builtins/2024-10-24-22-43-03.gh-issue-125942.3UQht1.rst
@@ -0,0 +1,2 @@
+On Android, the ``errors`` setting of :any:`sys.stdout` was changed from
+``surrogateescape`` to ``backslashreplace``.
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