[Zope] Why 'unbound method' error?
Chris McDonough
chrism@zope.com
Thu, 25 Jul 2002 17:54:24 -0400
Hi Gregory,
This is an issue with instances that descend from "ExtensionClass"
(which your first class does).
Read about the inheritedAttribute method in your Zope's
lib/Components/ExtensionClass/doc/ExtensionClass.stx directory.
- C
Warnes, Gregory R wrote:
> I've just modified a python product and I've started getting an error that
> doesn't make sense to me.
>
> Here's the error message:
>
> Error Type: TypeError
> Error Value: unbound method connect() must be called with instance as first
> argument
> [...]
> File
> /Volumes/app/appman/lib/zope/Zope-2.5.1-solaris-2.6-sparc/Products/RSessionD
> A/RSessionDA.py, line 213, in putFile
> (Object: RSession)
> File
> /Volumes/app/appman/lib/zope/Zope-2.5.1-solaris-2.6-sparc/Products/RSessionD
> A/RSOAP/localRSOAPConnection.py, line 124, in uploadFile
> (Object: RSession)
> File
> /Volumes/app/appman/lib/zope/Zope-2.5.1-solaris-2.6-sparc/Products/RSessionD
> A/RSOAP/localRSOAPConnection.py, line 49, in connect
> (Object: RSession)
> TypeError: (see above)
>
> and the 'offending' code:
>
> class RSession(localRSOAPConnection, SimpleItem):
> '''Connection object to the R Kernel'''
>
> # no connect method defined here ... #
> ....
>
> class localRSOAPConnection(RSOAPConnection):
>
> def connect(self):
> flag = RSOAPConnection.connect(self)
>
> if flag:
> self.__checklocal()
>
> return flag
>
> ....
>
>
> The localRSOAPConnection code works just fine in standalone Python. In
> Zope the localRSOAPConnection is extended by RSession with methods that are
> Zope-aware.
>
> My question is why is the call to 'connect' failing in Zope? I am passing
> a valid instance with the self argument...
>
> Ideas appreciated...
>
> -Greg
>
>
>
>
>
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--
Chris McDonough Zope Corporation
http://www.zope.org http://www.zope.com
"Killing hundreds of birds with thousands of stones"