python
diff --git a/‎Lib/logging/handlers.py
Copy file name to clipboardExpand all lines: Lib/logging/handlers.py
+3Lines changed: 3 additions & 0 deletions b/‎Lib/logging/handlers.py
Copy file name to clipboardExpand all lines: Lib/logging/handlers.py
+3Lines changed: 3 additions & 0 deletions
diff --git a/‎Misc/NEWS.d/next/Library/2019-01-13-01-33-00.bpo-35726.dasdas.rst
Copy file name to clipboard
+1Lines changed: 1 addition & 0 deletions b/‎Misc/NEWS.d/next/Library/2019-01-13-01-33-00.bpo-35726.dasdas.rst
Copy file name to clipboard
+1Lines changed: 1 addition & 0 deletions
@@ -27,6 +27,7 @@
 from stat import ST_DEV, ST_INO, ST_MTIME
 import queue
 import threading
+import copy
 
 #
 # Some constants...
@@ -1377,6 +1378,8 @@ def prepare(self, record):
         # exc_info and exc_text attributes, as they are no longer
         # needed and, if not None, will typically not be pickleable.
         msg = self.format(record)
+        # bpo-35726: make copy of record to avoid affecting other handlers in the chain.
+        record = copy.copy(record)
         record.message = msg
         record.msg = msg
         record.args = None
 
@@ -0,0 +1 @@
+QueueHandler.prepare() now makes a copy of the record before modifying and enqueueing it, to avoid affecting other handlers in the chain.
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+QueueHandler.prepare() now makes a copy of the record before modifying and enqueueing it, to avoid affecting other handlers in the chain.`