Python RuntimeWarning：启用tracemalloc以使用asyncio.sleep获取对象分配回溯

试图使用信号量控制异步请求以控制对目标主机的请求，但我得到了以下错误，我假设这意味着我的

asycio.sleep（）

实际上没有睡眠。我怎样才能解决这个问题？我想为每个目标URL的请求添加延迟

错误：

RuntimeWarning: coroutine 'sleep' was never awaited
Coroutine created at (most recent call last)
  File "sephora_scraper.py", line 71, in <module>
    loop.run_until_complete(main())
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/base_events.py", line 571, in run_until_complete
    self.run_forever()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/base_events.py", line 539, in run_forever
    self._run_once()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/base_events.py", line 1767, in _run_once
    handle._run()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/events.py", line 88, in _run
    self._context.run(self._callback, *self._args)
  File "makeup.py", line 26, in get_html
    asyncio.sleep(delay)
  asyncio.sleep(delay)
RuntimeWarning: Enable tracemalloc to get the object allocation traceback

将其更改为：

await asyncio.sleep(delay)

---

asyncio.sleep

是一个问题，应该等待解决。

也可以使用

async with

或至少

try/except

与信号量一起使用，如图所示。它将保证即使在异常情况下也会释放信号量。

asyncio.sleep(delay)

await asyncio.sleep(delay)