Added ',' thousands grouping to int.__format__. See PEP 378.
This is incomplete, but I want to get some version into the next alpha. I am still working on:
Documentation.
More tests.
Implement for floats.
In addition, there's an existing bug with 'n' formatting that carries forward to thousands grouping (issue 5515).
diff --git a/Objects/stringlib/unicodedefs.h b/Objects/stringlib/unicodedefs.h
index d579c1c..366acfe 100644
--- a/Objects/stringlib/unicodedefs.h
+++ b/Objects/stringlib/unicodedefs.h
@@ -22,6 +22,7 @@
#define STRINGLIB_RESIZE PyUnicode_Resize
#define STRINGLIB_CHECK PyUnicode_Check
#define STRINGLIB_GROUPING _PyUnicode_InsertThousandsGrouping
+#define STRINGLIB_GROUPING_LOCALE _PyUnicode_InsertThousandsGroupingLocale
#if PY_VERSION_HEX < 0x03000000
#define STRINGLIB_TOSTR PyObject_Unicode