AsyncIO only prints the single url

The https://www.jython.org url is never downloaded based on what is printed out

Steps to recreate:

git clone git@github.com:realpython/materials.git real_python_materials
cd real_python_materials/
python3.6 -m venv 36env
source 36env/bin/activate
pip install aiohttp

Running the script:

python io_asyncio.py 
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
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Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
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Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
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Read 273 from http://olympus.realpython.org/dice
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Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
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Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Read 273 from http://olympus.realpython.org/dice
Downloaded 160 sites in 3.151465892791748 seconds

Ejecuta python io_asyncio.py siguiendo los pasos de reproducción e inspecciona io_asyncio.py, centrándote en cómo se programan y se informan las URLs. Verifica que https://www.jython.org se descargue realmente, en lugar de descargarse únicamente la URL repetida http://olympus.realpython.org/dice. Se considera terminado cuando la salida refleja descargas del conjunto previsto de sitios.