Re: [Python-Dev] Py_BuildValue and decref

2006年9月08日 15:27:21 -0700

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On Sep 8, 2006, at 6:06 PM, Mihai Ibanescu wrote:
> There is no description of what happens when Py_BuildValue fails. 
> Will it
> decref the python object passed in? Will it not?
I just want to point out that the C API documentation is pretty 
silent about the refcounting side-effects in error conditions (and 
often in success conditions too) of most Python functions. For 
example, what is the refcounting side-effects of PyDict_SetItem() on 
val? What about if that function fails? Has val been incref'd or 
not? What about the side-effects on any value the new one replaces, 
both in success and failure?
The C API documentation has improved in documenting the refcount 
behavior for return values of many of the functions, but the only 
reliable way to know what some other side-effects are is to read the 
code. After I perfect my human cloning techniques, I'll be assigning 
one of my minions to fix this situation (I'll bet my clean-the-kitty- 
litter-and-stalk-er-keep-tabs-on-Britney clone would love to take a 
break for a few weeks to work on this).
- -Barry
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