Python asyncio.semaphore in async-await function

Question

I am trying to teach myself Python\'s async functionality. To do so I have built an async web scraper. I would like to limit the total number of connections I have open at o

Answer 1

OK, so this is really silly but I just replaces yield from with await in the semaphore context manager and it is working perfectly.

sema = asyncio.BoundedSemaphore(5)

async def get_page_text(url):
    with (await sema):
        try:
            resp = await aiohttp.request('GET', url)
            if resp.status == 200:
                ret_val = await resp.text()
        except:
            raise ValueError
        finally:
            await resp.release()
    return ret_val