[Python-Dev] [Python-checkins] r86566 - in python/branches/py3k: Doc/glossary.rst Doc/library/inspect.rst Lib/inspect.py Lib/test/test_inspect.py Misc/NEWS Misc/python-wing4.wpr (original) (raw)

Michael Foord fuzzyman at voidspace.org.uk
Sat Nov 20 17:28:40 CET 2010

On 20/11/2010 16:06, Michael Foord wrote:

On 20/11/2010 16:01, Nick Coghlan wrote: [snip...]

The retrieval of class is a normal lookup on the object, so it can trigger all of the things getattrstatic is trying to avoid (unavoidable if you want to support proxy classes at all), and the lookup of mro invokes all of those things on the metaclass. class and mro lookup are noted in the docs as being exceptions. We could actually remove the class lookup from the list of exceptions by using type(...) instead of obj.class.

Done.

I'll see if I'm still of the same opinion after I sleep on it, but my first impression of the docs was that they slightly oversold the strength of the "doesn't execute arbitrary code" aspect of the new function. The existing caveats were all relating to when getattr() and getattrstatic() might give different answers, while the additional caveats I was suggesting related to cases where arbitrary code may still be executed. I'm happy to change the wording to make the promise less strong.

I've also removed the mro exception. This is done with:

 type.__dict__['__mro__'].__get__(klass)

If you can think of any other exceptions then please let me know.

Michael

All the best,

Michael

Cheers, Nick.

--

http://www.voidspace.org.uk/

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