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One cool trick you can do as a quick-and-dirty hack to quickly access the output of your python script from the web is redirect it to nc with the -l (listen) option, like this:
python foo.py | nc -l 8080
You can then go to localhost:8080 in your web browser to see the output. It’s not really a web server though — it only works one time! Once someone loads the page, it will stop serving requests.
As a slightly more advanced variant of this that allows visiting the page more than once, wrap it in a loop, something like:
while true; do python foo.py | nc -l 8080; done
That’ll re-run your script every time you refresh the page though! As one final layer of sophistication, you can cache the result so it doesn’t need to be recomputed each time:
python foo.py > /tmp/myoutput; while true; do nc -l 8080 < /tmp/myoutput; done
Obviously none of these are real production-quality solutions, you should use a proper web framework like Flask etc., but they can do the trick if you just want to quickly test something out.