Addresses issue 2802: 'n' formatting for integers. Adds 'n' as a format specifier for integers, to mirror the same specifier which is already available for floats. 'n' is the same as 'd', but inserts the current locale-specific thousands grouping. I added this as a stringlib function, but it's only used by str type, not unicode. This is because of an implementation detail in unicode.format(), which does its own str->unicode conversion. But the unicode version will be needed in 3.0, and it may be needed by other code eventually in 2.6 (maybe decimal?), so I left it as a stringlib implementation. As long as the unicode version isn't instantiated, there's no overhead for this.

--- a/Objects/stringobject.c	Sun May 11 19:39:48 2008 +0000
+++ b/Objects/stringobject.c	Sun May 11 19:52:48 2008 +0000
@@ -784,6 +784,10 @@
 #include "stringlib/find.h"
 #include "stringlib/partition.h"
 
+#define _Py_InsertThousandsGrouping _PyString_InsertThousandsGrouping
+#include "stringlib/localeutil.h"
+
+
 
 static int
 string_print(PyStringObject *op, FILE *fp, int flags)