human
Solve the following python programming problem given the following code:
@ property 
def results(self) : 
    'This property holds the results of the analysis.

        The first time it is accessed, an iterator is returned. Its
        elements are cached into a list as it is iterated over. Therefore, if
        `results` is accessed multiple times after the first one, a list will
        be returned.
        ' 
    def caching_iterator(it, r) : 
        'An iterator that caches another iterator.' 
        for t in it : 
            (yield t) 
            r.append (t) 
if self._results : 
        return self._results 
return caching_iterator (self.run (), caching_iterator._results) 

    
    

    Fix the buggy line: return caching_iterator (self.run (), caching_iterator._results)
assistant
#Here is Python program to fix the buggy line: return caching_iterator (self.

return caching_iterator (self.run (), self._results)