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if os.path.exists(os.path.join(POSSIBLE_TOPDIR, 'nova', '__init__.py')):
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sys.path.insert(0, POSSIBLE_TOPDIR)
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from nova.openstack.common import log as logging
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from nova.openstack.common import rpc
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from nova.openstack.common.rpc import impl_zmq
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CONF.register_opts(rpc.rpc_opts)