human
Solve the following python programming problem given the following code:
@ patch_policies 
def test_get_response_headers_with_legacy_data(self) : 
    broker = backend.AccountBroker (':memory:', account = 'a') 
    now = time.time () 
    with mock.patch ('time.time', new = (lambda : now)) : 
        broker.initialize (Timestamp (now).internal) 
ts = (Timestamp (put_timestamp).internal for t in itertools.count (int (now))) 
    total_containers = 0 
    total_objects = 0 
    total_bytes = 0 
    for policy in POLICIES : 
        delete_timestamp = next (ts) 
        put_timestamp = next (ts) 
        object_count = int (policy) 
        bytes_used = (int (policy) * 10) 
        broker.put_container (('c-%s' % policy.name), put_timestamp, delete_timestamp, object_count, bytes_used, int (policy)) 
        total_containers += 1 
        total_objects += object_count 
        total_bytes += bytes_used 
expected = HeaderKeyDict ({ 
        'X-Account-Container-Count' : total_containers, 
        'X-Account-Object-Count' : total_objects, 
        'X-Account-Bytes-Used' : total_bytes, 
        'X-Timestamp' : Timestamp (now).normal, 
        'X-PUT-Timestamp' : Timestamp (now).normal, 
}) 
    for policy in POLICIES : 
        prefix = ('X-Account-Storage-Policy-%s-' % policy.name) 
        expected [(prefix + 'Object-Count')] = int (policy) 
        expected [(prefix + 'Bytes-Used')] = (int (policy) * 10) 
orig_policy_stats = broker.get_policy_stats 
    def stub_policy_stats(* args, **kwargs) : 
        policy_stats = orig_policy_stats (* args, ** kwargs) 
        for stats in policy_stats.values () : 
            del stats ['container_count'] 
return policy_stats 
broker.get_policy_stats = stub_policy_stats 
    resp_headers = utils.get_response_headers (broker) 
    per_policy_container_headers = [h for h in resp_headers if (h.lower ().startswith ('x-account-storage-policy-') and h.lower ().endswith ('-container-count'))] 
    self.assertFalse (per_policy_container_headers) 
    for (key, value) in resp_headers.items () : 
        expected_value = expected.pop (key) 
       ...

    
    

    Fix the buggy line: ts = (Timestamp (put_timestamp).internal for t in itertools.count (int (now)))
assistant
#Here is Python program to fix the buggy line: ts = (Timestamp (put_timestamp).

ts = (Timestamp (t).internal for t in itertools.count (int (now)))