How to use the aiomultiprocess.Pool function in aiomultiprocess

return x

        amp.set_context("spawn")

        with self.assertRaises(AttributeError):
            p = amp.Worker(target=inline, args=(1,), name="test_inline")
            p.start()
            await p.join()

        p = amp.Worker(target=two, name="test_global")
        p.start()
        await p.join()

        values = list(range(10))
        results = [await mapper(i) for i in values]
        async with amp.Pool(2) as pool:
            self.assertEqual(await pool.map(mapper, values), results)

        self.assertEqual(p.result, 2)

async def test_pool_concurrency(self):
        results = []
        for sleep, tasks, processes, concurrency in PERF_SETS:
            with Timer() as timer:
                async with amp.Pool(processes, childconcurrency=concurrency) as pool:
                    await pool.map(sleepy, (sleep for _ in range(tasks)))

            results.append((sleep, tasks, processes, concurrency, timer.result))

        print()
        for result in results:
            print(*result)

async def makeurl(self,sta,end,limit): 
        urls=['http://img1.mm131.me/pic/'+str(i)+'/'+str(j)+'.jpg' for i in range(sta,end+1) for j in range(1,limit)]
        return await Pool().map(self.async_get,urls)