Issue #21138: Change default reformat paragraph width to PEP 8's 72.
diff --git a/Lib/idlelib/config-main.def b/Lib/idlelib/config-main.def
index 5ddd098..132797c 100644
--- a/Lib/idlelib/config-main.def
+++ b/Lib/idlelib/config-main.def
@@ -59,7 +59,7 @@
 encoding= none
 
 [FormatParagraph]
-paragraph=70
+paragraph=72
 
 [Indent]
 use-spaces= 1