human
Solve the following python programming problem given the following code:
def _testPool_2(self, res) : 
    sql = 'select count(1) from simple' 
    d = self.dbpool.runQuery (self) 
    def _check(row) : 
        self.assertTrue ((int (row [0] [0]) == 0), 'Interaction not rolled back') 
        self.checkOpenfunCalled () 
d.addCallback (_check) 
    return d 

    
    

    Fix the buggy line: d = self.dbpool.runQuery (self)
assistant
#Here is Python program to fix the buggy line: d = self.

d = self.dbpool.runQuery (sql)