Needed packages: (python3-flask python3-sqlalchemy) python3-mysqldb python3-flask-sqlalchemy python3-sphinxcontrib.httpdomain

Start with:
FLASK_APP=seepark_web.py FLASK_DEBUG=1 SEEPARKINI=~/seewasser.ini flask run

Option:
-h 0.0.0.0
at the end to listen on all interfaces, i.e.
FLASK_APP=seepark_web.py FLASK_DEBUG=1 SEEPARKINI=~/seewasser.ini flask run -h 0.0.0.0
(or :: instead of 0.0.0.0 for ipv4+ipv6)


Go to:
http://127.0.0.1:5000/
or http://<ipaddress>:5000/
if the app is running on a different machine

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notes on a "production" server:

needed: python3-waitress

run (in folder web):
SEEPARKINI=~/seewasser.ini waitress-serve --port 8765 'seepark_web:app'

links:

http://flask.pocoo.org/docs/1.0/tutorial/deploy/
http://flask.pocoo.org/docs/1.0/tutorial/factory/
https://github.com/pallets/flask/blob/1.0.2/examples/tutorial/flaskr/__init__.py

https://docs.pylonsproject.org/projects/waitress/en/latest/
https://docs.pylonsproject.org/projects/waitress/en/latest/runner.html#runner

https://gr33ndata.blogspot.com/2012/01/waitress-flask.html

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Generate documentation:
cd doc
SEEPARKINI=~/seewasser.ini make web

To make this run on Debian Buster we had to do the following first

$ cd /home/philipp/opt/pyenv
$ virtualenv -p python3 --system-site-packages seepark
$ source seepark/bin/activate
$ pip install --upgrade sphinx
$ pip install --upgrade sphinxcontrib-httpdomain


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Execute unittests
SEEPARKINI=~/seewasser.ini python3 -m unittest seepark_web_tests.py