fixed #6801: symmetric_difference_update also accepts pipe
diff --git a/Misc/NEWS b/Misc/NEWS
index 49a0942..e9a929a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -1229,6 +1229,9 @@
 - Issue #6556: Fixed the Distutils configuration files location explanation
   for Windows.
 
+- Issue #6801 : symmetric_difference_update also accepts |.
+  Thanks to Carl Chenet. 
+
 C-API
 -----