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

Run python io_asyncio.py using the reproduction steps and inspect io_asyncio.py, focusing on how the URLs are scheduled and reported. Verify that https://www.jython.org is actually downloaded rather than only the repeated http://olympus.realpython.org/dice URL. Done means the output reflects downloads from the intended set of sites.