#3703 unhelpful _fileio.FileIO error message when trying to open a directory

Reviewer: Gregory P. Smith
diff --git a/Misc/NEWS b/Misc/NEWS
index c41f10c..5ccce4b 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -52,6 +52,9 @@
 
 - Fixed two format strings in the _collections module.
 
+- #3703 _fileio.FileIO gave unhelpful error message when trying to open a
+   directory.
+
 Extension Modules
 -----------------