[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)

Nick Coghlan ncoghlan at gmail.com
Sat Nov 20 16:21:32 CET 2010

On Sun, Nov 21, 2010 at 1:07 AM, michael.foord <python-checkins at python.org> wrote:

+Fetching attributes statically +------------------------------ + +Both :func:getattr and :func:hasattr can trigger code execution when +fetching or checking for the existence of attributes. Descriptors, like +properties, will be invoked and :meth:_getattr_ and :meth:_getattribute_ +may be called. + +For cases where you want passive introspection, like documentation tools, this +can be inconvenient. getattrstatic has the same signature as :func:getattr +but avoids executing code when it fetches attributes.

This description feels a little strong to me - getattr_static still executes all those things on the metaclass as it retrieves the information it needs to do the "static" lookup. Leaving this original description (which assumes metaclass=type) alone and adding a note near the end of the section to say that metaclass code is still executed might be an improvement.

Cheers, Nick.

-- Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia

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