Add documentation for the new PyErr_SetFromImport* functions

Doc/c-api/exceptions.rst

@@ -229,6 +229,24 @@ in various ways.  There is a separate error indicator for each thread.
    Similar to :c:func:`PyErr_SetFromWindowsErrWithFilename`, with an additional
    parameter specifying the exception type to be raised. Availability: Windows.
 
+.. c:function:: PyObject* PyErr_SetExcWithArgsKwargs(PyObject *exc, PyObject *args, PyObject *kwargs)
+
+   This is a convenience function to set an *exc* with the given *args* and
+   *kwargs* values. If *args* is ``NULL``, an empty :func:`tuple` will be
+   created when *exc* is created via :c:func:`PyObject_Call`.
+
+.. c:function:: PyObject* PyErr_SetFromImportErrorWithName(PyObject *msg, PyObject *name)
+
+   This is a convenience function to raise :exc:`ImportError`. *msg* will be
+   set as the exception's message string, and *name* will be set as the
+   :exc:`ImportError`'s ``name`` attribute.
+
+.. c:function:: PyObject* PyErr_SetFromImportErrorWithNameAndPath(PyObject *msg, PyObject *name, PyObject *path)
+
+   This is a convenience function to raise :exc:`ImportError`. *msg* will be
+   set as the exception's message string. Both *name* and *path* will be set
+   as the :exc:`ImportError`'s respective ``name`` and ``path`` attributes.
+
 
 .. c:function:: void PyErr_SyntaxLocationEx(char *filename, int lineno, int col_offset)