whatsnew: encoding is now optional in PYTHONIOENCODING (#18818)

diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst
index ddc21fc96093059460de696c4c06ff1dbca289e9..109549e07142b3f6c26cfb60680a267673d48bd7 100644 (file)
--- a/Doc/whatsnew/3.4.rst
+++ b/Doc/whatsnew/3.4.rst
@@ -1578,6 +1578,11 @@ Other Improvements
   to use copies rather than symlinks even on systems where symlinks are the
   default.  (Contributed by Vinay Sajip in :issue:`18807`.)
 
+* The encoding name is now optional in the value set for the
+  :envvar:`PYTHONIOENCODING` environment variable.  This makes it possible to
+  set just the error handler, without changing the default encoding.
+  (Contributed by Serhiy Storchaka in :issue:`18818`.)
+
 
 Significant Optimizations
 -------------------------