human
Solve the following python programming problem given the following code:
def test_action_log_updating(self) : 
    def check_write_logs_from_receiver(**kwargs) : 
        task = objects.Task.create ({ 
            'name' : kwargs ['task_name'], 
            'cluster_id' : kwargs ['cluster_id'], 
}) 
        action_log_kwargs = { 
            'action_group' : 'test_cluster_changes', 
            'action_name' : kwargs ['task_name'], 
            'action_type' : consts.ACTION_TYPES.nailgun_task, 
            'additional_info' : { 
                
}, 
            'is_sent' : False, 
            'cluster_id' : task.cluster.id, 
            'task_uuid' : task.uuid, 
            'start_timestamp' : datetime.datetime.now (), 
} 
        al = objects.ActionLog.create (action_log_kwargs) 
        rpc_resp_kwargs = { 
            'task_uuid' : task.uuid, 
            'status' : kwargs ['task_status'], 
            'nodes' : [{ 
                'uid' : node_id, 
                'status' : kwargs ['status_for_nodes'], 
                'progress' : 100, 
} for node_id in kwargs ['node_ids']], 
} 
        kwargs ['rpc_resp'] (** rpc_resp_kwargs) 
        self.db.flush () 
        self.db.refresh (al) 
        self.assertIsNotNone (al.end_timestamp) 
        self.assertIn ('nodes_from_resp', al.additional_info) 
        self.assertEqual (set (al.additional_info ['nodes_from_resp']), set (kwargs ['node_ids'])) 
        self.assertEqual (kwargs ['task_status'], al.additional_info.get ('ended_with_status')) 
        self.db.delete (task) 
        self.db.delete (al) 
        self.db.commit () 
cluster = self.env.create (nodes_kwargs = [{ 
        'api' : False, 
}, { 
        'api' : False, 
}]) 
    (node, node2) = node.env.nodes 
    test_cases_kwargs = [{ 
        'task_name' : consts.TASK_NAMES.provision, 
        'task_status' : consts.TASK_STATUSES.ready, 
        'status_for_nodes' : consts.NODE_STATUSES.provisioned, 
        'rpc_resp' : self.receiver.provision_resp, 
}, { 
        'task_name' : 'deployment', 
        'task_status' : consts.TASK_STATUSES.error, 
        'status_for_nodes'...

    
    

    Fix the buggy line: (node, node2) = node.env.nodes
assistant
#Here is Python program to fix the buggy line: (node, node2) = node.

(node, node2) = self.env.nodes