Issue #26987: Correct implementation to match comment
This was inadvertently changed in 644b677c2ae5 to use self._stderr
instead of _sys.stderr.
diff --git a/Lib/threading.py b/Lib/threading.py
index 828019d..dd25f72 100644
--- a/Lib/threading.py
+++ b/Lib/threading.py
@@ -921,7 +921,7 @@
# self.
if _sys and _sys.stderr is not None:
print("Exception in thread %s:\n%s" %
- (self.name, _format_exc()), file=self._stderr)
+ (self.name, _format_exc()), file=_sys.stderr)
elif self._stderr is not None:
# Do the best job possible w/o a huge amt. of code to
# approximate a traceback (code ideas from