From fd412e16c5321de68b92dccd82d17ecd9cf398c4 Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <python@rcn.com>
Date: Thu, 12 Mar 2009 19:36:28 +0000
Subject: [PATCH] Add research on what C Sharp does.

---
 pep-0378.txt | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/pep-0378.txt b/pep-0378.txt
index 5360b0827..4dea841f9 100644
--- a/pep-0378.txt
+++ b/pep-0378.txt
@@ -60,10 +60,12 @@ specifiers like::
 
     "_($* #,##0_)".
 
-COBOL uses picture clauses like::
+`COBOL`_ uses picture clauses like::
 
     PIC $***,**9.99CR
 
+.. _`COBOL`: http://en.wikipedia.org/wiki/Cobol
+
 `Common Lisp`_ uses a COLON before the ``~D`` decimal type specifier to
 emit a COMMA as a thousands separator.  The  general form of ``~D`` is
 ``~mincol,padchar,commachar,commaintervalD``.  The *padchar* defaults
@@ -76,6 +78,17 @@ defaults to three.
 
 .. _`Common Lisp`: http://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node200.html
 
+`C-Sharp`_ provides both styles (picture formatting and type specifiers).
+The type specifier approach is locale aware.  The picture formatting only
+offers a COMMA as a thousands separator::
+
+    String.Format("{0:c}", 12400)   ==>   "$12,400"
+    String.Format("{0:n}", 12400)   ==>    "12,400"
+    String.Format("{0:0,0}", 12400)   ==>  "12,400"
+
+.. _`C-Sharp`: http://blog.stevex.net/index.php/string-formatting-in-csharp/
+
+
 Proposal I (from Nick Coghlan)
 ==============================