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
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Downloaded 160 sites in 3.151465892791748 seconds

Esegui python io_asyncio.py seguendo i passaggi per la riproduzione e ispeziona io_asyncio.py, concentrandoti su come vengono pianificati e riportati gli URL. Verifica che https://www.jython.org venga effettivamente scaricato, invece della sola URL ripetuta http://olympus.realpython.org/dice. Il lavoro è completato quando l’output riflette i download dall’insieme di siti previsto.