Raymond Hettinger wrote:

This seems like something that could reasonably be added to Py2.6.

+1 from me PEP 3107 (function annotation), PEP 3104 (nonlocal) and PEP 3132 (extended iterable unpacking: a, *b = 1,2,3) are IMHO other useful feature for 2.6. nonlocal would require a __future__ import. Christian

Robin Stocker wrote:

I'm planning to work on PEP 3107 (function annotations) after I have finished backporting PEP 3102 (keyword-only arguments) (issue1745).

Thanks! I've backported class decorators: http://bugs.python.org/issue1759 Could somebody with more knowledge about grammer and ASDL check it out, please? Christian

Eli Courtwright wrote:

I can tell that instancemethods can't have attributes added to them outside of their class definition. Is this part of the Python language spec, or just an implementation detail of CPython?

You can't modify the attributes of an instance method. You have to modify the attribute of the function object.

I bring this up here because it makes writing certain class decorators much more annoying. For example, if I want to write a class decorator that will set "exposed=True" for every method of a class, I must resort to shenanigans.

No, you don't. You have to retrieve the function object from the instance method object. The example should shed some light on the problem:

...

...

class Root(object): ... def index(self): ... return "Hello World!" ... print type(index) ... index.exposed = True ... <type 'function'> type(Root.index) <type 'instancemethod'> Root.index.exposed True Root.index.exposed = False Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: 'instancemethod' object has no attribute 'exposed' Root.index.im_func <function index at 0x8354e64> Root.index.im_func.exposed = False Root.index.exposed False

Christian