[python-win32] Bug in pywin32 PyIADs?

Roger Upole rupole at hotmail.com
Sun Apr 22 20:34:58 CEST 2012

"Tim Golden" <mail at timgolden.me.uk> wrote in message news:4F944314.4030406 at timgolden.me.uk...
> Could someone glance at this to confirm that it does indeed
> seem to be a bug before I start hunting up the chain of
> function calls to spot the issue, please?
> Steps are simple:
> 1) Use Python 3.2 and pywin32 217
> 2) Use the following code (obviously substituting some suitable domain):
> from win32com import adsi
> adsi.ADsGetObject("LDAP://dc=example,dc=com", adsi.IID_IADs)
> 3) Receive: "TypeError: expected bytes, str found"
> The error appears to be in a hasattr call in _get_good_ret
> inside the __init__.py of the adsi subpackage. I've also
> seen this in another circumstance where it doesn't make sense:
> in an isinstance call where the first param is an PyIADs object.
> Further information: this doesn't happen if you don't request
> the IID_IADs interface (and it defaults to a wrapped IDispatch)
> I assume that, somewhere up the chain of attribute handling from PyIADs upwards, the ytes/str error is occurring either
> specifically within the pywin32 code or implicitly as it passes something to Python itself.
> I've eyeballed the getattro code in PyIADs.cpp but I can't see anything
> absolutely obvious.
> As it happens I don't have a build environment set up here so I'll
> have to build Python & then pywin32 in order to drop into the debugger.
> I thought I'd ask first in case anyone else could spot something
> which I'd missed.
> Thanks

The problem is in this code:
PyObject* PyIADs_getattro(PyObject *ob, PyObject *obname)
char *name = PyString_AsString(obname);
if (!name) return NULL;

It should be using  PYWIN_ATTR_CONVERT on the attribute name.


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