Issue #8533: Write tracebacks and failed tests to sys.stderr instead of
sys.stdout to avoid UnicodeEncodeError (use backslashreplace error handler)
diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
index c432ca4..ec49b95 100755
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -939,8 +939,8 @@
print("test", test, "crashed --", str(type) + ":", value)
sys.stdout.flush()
if verbose or debug:
- traceback.print_exc(file=sys.stdout)
- sys.stdout.flush()
+ traceback.print_exc(file=sys.stderr)
+ sys.stderr.flush()
return FAILED, test_time
else:
if refleak:
diff --git a/Lib/test/support.py b/Lib/test/support.py
index 4ea6c05..3c4d5d6 100644
--- a/Lib/test/support.py
+++ b/Lib/test/support.py
@@ -1020,7 +1020,7 @@
def _run_suite(suite):
"""Run tests from a unittest.TestSuite-derived class."""
if verbose:
- runner = unittest.TextTestRunner(sys.stdout, verbosity=2)
+ runner = unittest.TextTestRunner(sys.stderr, verbosity=2)
else:
runner = BasicTestRunner()
diff --git a/Misc/NEWS b/Misc/NEWS
index 17702c7..f935480 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -1198,6 +1198,9 @@
Tests
-----
+- Issue #8533: Write tracebacks and failed tests to sys.stderr instead of
+ sys.stdout to avoid UnicodeEncodeError (use backslashreplace error handler)
+
- Issue #8576: Remove use of find_unused_port() in test_smtplib and
test_multiprocessing. Patch by Paul Moore.