[Python-checkins] peps: pep-0492: AsyncFuntionDef ast node; 100% backwards compatible

[yury.selivanov]

https://hg.python.org/peps/rev/d6718ddbc92b
changeset:   5774:d6718ddbc92b
user:        Yury Selivanov <yselivanov at sprymix.com>
date:        Sun Apr 19 14:15:49 2015 -0400
summary:
  pep-0492: AsyncFuntionDef ast node; 100% backwards compatible

files:
  pep-0492.txt |  8 ++------
  1 files changed, 2 insertions(+), 6 deletions(-)


diff --git a/pep-0492.txt b/pep-0492.txt
--- a/pep-0492.txt
+++ b/pep-0492.txt
@@ -567,10 +567,7 @@
 Backwards Compatibility
 -----------------------
 
-The only backwards incompatible change is an extra argument ``is_async`` to
-``FunctionDef`` AST node.  But since it is a documented fact that the structure
-of AST nodes is an implementation detail and subject to change, this should not
-be considered a serious issue.
+This proposal preserves 100% backwards compatibility.
 
 
 Grammar Updates
@@ -922,8 +919,7 @@
    protocol with ``__aiter__``, ``__aexit__`` and new built-in exception
    ``StopAsyncIteration``.
 
-5. New AST nodes: ``AsyncFor``, ``AsyncWith``, ``Await``; ``FunctionDef`` AST
-   node got a new argument ``is_async``.
+5. New AST nodes: ``AsyncFunctionDef``, ``AsyncFor``, ``AsyncWith``, ``Await``.
 
 6. New functions: ``sys.set_coroutine_wrapper(callback)`` and
    ``types.async_def(gen)``.

-- 
Repository URL: https://hg.python.org/peps