human
Solve the following python programming problem given the following code:
def _check_5674c57409b9(self, engine, data) : 
    nodes = db_utils.get_table (engine, 'nodes') 
    result = engine.execute (nodes.select ()) 
    def _get_state(uuid) : 
        for row in data : 
            if (row ['uuid'] == uuid) : 
                return row ['provision_state'] 
for row in result : 
        old = _get_state (nodes ['uuid']) 
        new = row ['provision_state'] 
        if (old is None) : 
            self.assertEqual ('available', new) 
else : 
            self.assertEqual (old, new) 

    
    

    Fix the buggy line: old = _get_state (nodes ['uuid'])
assistant
#Here is Python program to fix the buggy line: old = _get_state (nodes ['uuid'])
.

old = _get_state (row ['uuid'])