Changes from Python 3.5 to Python 3.6ΒΆ

--- /home/docs/checkouts/readthedocs.org/user_builds/restrictedpython/checkouts/latest/docs/contributing/ast/python3_5.ast
+++ /home/docs/checkouts/readthedocs.org/user_builds/restrictedpython/checkouts/latest/docs/contributing/ast/python3_6.ast
@@ -1,7 +1,11 @@
--- Python 3.5 AST
--- ASDL's six builtin types are identifier, int, string, bytes, object, singleton
+-- Python 3.6 AST
+-- ASDL's 7 builtin types are:
+-- identifier, int, string, bytes, object, singleton, constant
+--
+-- singleton: None, True or False
+-- constant can be None, whereas None means "no value" for object.
 
-module Python version "3.5"
+module Python version "3.6"
 {
     mod = Module(stmt* body)
         | Interactive(stmt* body)
@@ -31,6 +35,8 @@
          | Delete(expr* targets)
          | Assign(expr* targets, expr value)
          | AugAssign(expr target, operator op, expr value)
+         -- 'simple' indicates that we annotate simple name without parens
+         | AnnAssign(expr target, expr annotation, expr? value, int simple)
 
          -- use 'orelse' because else is a keyword in target languages
          | For(expr target, expr iter, stmt* body, stmt* orelse)
@@ -82,9 +88,12 @@
                 keyword* keywords)
          | Num(object n) -- a number as a PyObject.
          | Str(string s) -- need to specify raw, unicode, etc?
+         | FormattedValue(expr value, int? conversion, expr? format_spec)
+         | JoinedStr(expr* values)
          | Bytes(bytes s)
          | NameConstant(singleton value)
          | Ellipsis
+         | Constant(constant value)
 
          -- the following expression can appear in assignment context
          | Attribute(expr value, identifier attr, expr_context ctx)
@@ -141,7 +150,7 @@
           | In
           | NotIn
 
-    comprehension = (expr target, expr iter, expr* ifs)
+    comprehension = (expr target, expr iter, expr* ifs, int is_async)
 
     excepthandler = ExceptHandler(expr? type, identifier? name, stmt* body)
                     attributes (int lineno, int col_offset)