human
Solve the following python programming problem given the following code:
def _handle_blob_length(self, request) : 
    if (self.blob_length_payment_rate is not None) : 
        assert ('blob_hashes' in request) 
        ds = [] 
        def make_response_pair(length, blob_hash) : 
            return (blob_hash, length) 
for blob_hash in make_response ['blob_hashes'] : 
            d = self.blob_manager.get_blob_length (blob_hash) 
            d.addCallback (make_response_pair, blob_hash) 
            ds.append (d) 
dl = defer.DeferredList (ds) 
        def make_response(response_pairs) : 
            lengths = [] 
            for (success, response_pair) in response_pairs : 
                if (success is True) : 
                    lengths.append (response_pair) 
if (len (lengths) > 0) : 
                log.info ('Responding with %s blob lengths: %s', str (len (lengths))) 
                expected_payment = (((1.0 * len (lengths)) * self.blob_length_payment_rate) / 1000.0) 
                self.wallet.add_expected_payment (self.peer, expected_payment) 
                self.peer.update_stats ('uploaded_valuable_blob_infos', len (lengths)) 
return { 
                'blob_length' : { 
                    'blob_lengths' : lengths, 
}, 
} 
dl.addCallback (make_response) 

    
    

    Fix the buggy line: for blob_hash in make_response ['blob_hashes'] :
assistant
#Here is Python code to fix the buggy line: for blob_hash in make_response ['blob_hashes'] :
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for blob_hash in request ['blob_hashes'] :