[Python-Dev] PEP 362 Second Revision

[Yury Selivanov]

On 2012-06-07, at 3:54 PM, Terry Reedy wrote:
> On 6/7/2012 10:41 AM, Yury Selivanov wrote:
>> Hello,
>> 
>> The new revision of PEP 362 has been posted:
>> http://www.python.org/dev/peps/pep-0362/
>> 
>> Thanks to Brett, Larry, Nick, and everybody else on python-dev
>> for your corrections/suggestions.
>> 
>> Summary of changes:
>> 
>> 1. We don't cache signatures in __signature__ attribute implicitly
>> 
>> 2. signature() function is now more complex, but supports methods,
>> partial objects, classes, callables, and decorated functions
>> 
>> 3. Signatures are always constructed on demand
>> 
>> 4. Dropped the deprecation section
> 
> I like this now. Being more able to get the actual signature of partials and wraps will be a win. If the signature object has a decent __str__/__repr__ method, I would (try to remember) to revise idle tooltips (for whichever version) to check for .__signature__ before inspect'ing.

I think we'll add a 'format' method to the Signature, that will work
like 'inspect.formatargspec'.  'Signature.__str__' will use it with
default parameters/formatters.

I'm not sure how __repr__ should look like.  Maybe default repr
(object.__repr__) is good enough.

-
Yury