bpo-40141: Add line and column information to ast.keyword nodes (GH-19283)

diff --git a/Python/ast.c b/Python/ast.c
index fb23c02..550ee03 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -3013,7 +3013,8 @@
                 e = ast_for_expr(c, CHILD(ch, 1));
                 if (!e)
                     return NULL;
-                kw = keyword(NULL, e, c->c_arena);
+                kw = keyword(NULL, e, chch->n_lineno, chch->n_col_offset,
+                             e->end_lineno, e->end_col_offset, c->c_arena);
                 asdl_seq_SET(keywords, nkeywords++, kw);
                 ndoublestars++;
             }
@@ -3103,7 +3104,9 @@
                 e = ast_for_expr(c, CHILD(ch, 2));
                 if (!e)
                     return NULL;
-                kw = keyword(key, e, c->c_arena);
+                kw = keyword(key, e, chch->n_lineno, chch->n_col_offset,
+                             chch->n_end_lineno, chch->n_end_col_offset, c->c_arena);
+
                 if (!kw)
                     return NULL;
                 asdl_seq_SET(keywords, nkeywords++, kw);