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Bug 623853 - libguestfs uses PyCObject API (deprecated in Python 2.7)
libguestfs uses PyCObject API (deprecated in Python 2.7)
Product: Fedora
Classification: Fedora
Component: libguestfs (Show other bugs)
All Linux
low Severity medium
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Assigned To: Richard W.M. Jones
Fedora Extras Quality Assurance
Depends On:
Blocks: PyCObject
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Reported: 2010-08-12 20:48 EDT by Dave Malcolm
Modified: 2010-08-27 03:46 EDT (History)
4 users (show)

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Doc Type: Bug Fix
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Last Closed: 2010-08-27 03:46:00 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Dave Malcolm 2010-08-12 20:48:15 EDT
Description of problem:
Python 2.7 deprecated the PyCObject API in favor of a new "capsule" API.

The deprecations are set to "ignore" by default, so in theory the API still works.

However the deprecation has caused at least one app to fail (virt-manager, see bug 620216, due to it modifying the warning settings), so I've been doublechecking the scope of usage of the PyCObject, and am filing bugs against components that are possibly affected.

You can trigger a hard failure of the API via:
>>> import warnings
>>> warnings.filterwarnings('error')
and then use the affected part of the module (appears to be in py_guestfs_create).

./src/generator.ml:9507:    PyCObject_FromVoidPtrAndDesc ((void *) g, (char *) \"guestfs_h\", NULL);
./python/guestfs-py.c:56:    PyCObject_FromVoidPtrAndDesc ((void *) g, (char *) "guestfs_h", NULL);

I'm not yet sure what the best approach is to fixing this.

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