Hide list comp variables and support set comprehensions
diff --git a/Include/Python-ast.h b/Include/Python-ast.h
index e07f025..d88076b 100644
--- a/Include/Python-ast.h
+++ b/Include/Python-ast.h
@@ -183,10 +183,10 @@
 
 enum _expr_kind {BoolOp_kind=1, BinOp_kind=2, UnaryOp_kind=3, Lambda_kind=4,
                   IfExp_kind=5, Dict_kind=6, Set_kind=7, ListComp_kind=8,
-                  GeneratorExp_kind=9, Yield_kind=10, Compare_kind=11,
-                  Call_kind=12, Num_kind=13, Str_kind=14, Bytes_kind=15,
-                  Ellipsis_kind=16, Attribute_kind=17, Subscript_kind=18,
-                  Name_kind=19, List_kind=20, Tuple_kind=21};
+                  SetComp_kind=9, GeneratorExp_kind=10, Yield_kind=11,
+                  Compare_kind=12, Call_kind=13, Num_kind=14, Str_kind=15,
+                  Bytes_kind=16, Ellipsis_kind=17, Attribute_kind=18,
+                  Subscript_kind=19, Name_kind=20, List_kind=21, Tuple_kind=22};
 struct _expr {
         enum _expr_kind kind;
         union {
@@ -234,6 +234,11 @@
                 struct {
                         expr_ty elt;
                         asdl_seq *generators;
+                } SetComp;
+                
+                struct {
+                        expr_ty elt;
+                        asdl_seq *generators;
                 } GeneratorExp;
                 
                 struct {
@@ -465,6 +470,9 @@
 #define ListComp(a0, a1, a2, a3, a4) _Py_ListComp(a0, a1, a2, a3, a4)
 expr_ty _Py_ListComp(expr_ty elt, asdl_seq * generators, int lineno, int
                      col_offset, PyArena *arena);
+#define SetComp(a0, a1, a2, a3, a4) _Py_SetComp(a0, a1, a2, a3, a4)
+expr_ty _Py_SetComp(expr_ty elt, asdl_seq * generators, int lineno, int
+                    col_offset, PyArena *arena);
 #define GeneratorExp(a0, a1, a2, a3, a4) _Py_GeneratorExp(a0, a1, a2, a3, a4)
 expr_ty _Py_GeneratorExp(expr_ty elt, asdl_seq * generators, int lineno, int
                          col_offset, PyArena *arena);