Document Py_VaBuildValue.

diff --git a/Doc/c-api/arg.rst b/Doc/c-api/arg.rst
index c3da8591cda6c58c4ab17025a18ee9b3c20c8a7f..144a36545d6b5a1320825f62e22db61449a4ed39 100644 (file)
--- a/Doc/c-api/arg.rst
+++ b/Doc/c-api/arg.rst
@@ -534,3 +534,8 @@ and the following format units are left untouched.
 
    If there is an error in the format string, the :exc:`SystemError` exception is
    set and *NULL* returned.
+
+.. cfunction:: PyObject* Py_VaBuildValue(const char *format, va_list vargs)
+
+   Identical to :cfunc:`Py_BuildValue`, except that it accepts a va_list
+   rather than a variable number of arguments.