hasattr can swallow exceptions. I suggest

=== modified file 'bin/euca-describe-volumes'
--- bin/euca-describe-volumes   2009-10-12 09:11:57 +0000
+++ bin/euca-describe-volumes   2010-02-06 00:15:08 +0000
@@ -73,8 +73,11 @@
            volume_string += '\t%s' % (volume.snapshot_id)
        else:
            volume_string += '\t'
-       if volume.availabilityZone:
-           volume_string += '\t%s' % volume.availabilityZone
+
+       az = getattr(volume, 'availabilityZone', object)
+       if az is object: az=volume.zone
+       if az: volume_string += '\t%s' % az
+
        volume_string += '\t%s\t%s' % (volume.status, volume.create_time)
        print 'VOLUME\t%s' % (volume_string)
        if volume.status == 'in-use':

-- 
euca-describe-volumes fails in lucid
https://bugs.launchpad.net/bugs/517871
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