https://flask.palletsprojects.com/en/1.1.x/quickstart/#quickstart
$ export FLASK_APP=hello.py
$ flask run
* Running on http://127.0.0.1:5000/
Alternatively you can use python -m flask:
$ export FLASK_APP=hello.py
$ python -m flask run
* Running on http://127.0.0.1:5000/$ flask run --host=0.0.0.0pip install -e . as package
to test add PYTHONPATH=. env variable
pip install wheel
python setup.py bdist_wheel
find the buidl in dist/flaskr-1.0.0-py3-none-any.whl
Copy this file to another machine, set up a new virtualenv, then install the file with pip.
```shell
$ pip install flaskr-1.0.0-py3-none-any.whl
$ export FLASK_APP=flaskr
$ flask init-db
When Flask detects that it’s installed (not in editable mode), it uses a different directory for the instance folder. You can find it at venv/var/flaskr-instance instead.
$ python -c 'import os; print(os.urandom(16))'
b'_5#y2L"F4Q8z\n\xec]/'Create the config.py file in the instance folder, which the factory will read from if it exists. Copy the generated value into it.
venv/var/flaskr-instance/config.py SECRET_KEY = b'_5#y2L"F4Q8z\n\xec]/'