= Flask =
 * Micro web development framework
 * https://flask.palletsprojects.com/en/2.0.x/
 * Flask depends on the Jinja template engine and the Werkzeug WSGI toolkit. 

== Example ==
{{{#!highlight bash
cd ~/tmp
mkdir flaskproject
cd flaskproject
sudo apt install python3-venv
python3 -m venv virtenv
. virtenv/bin/activate
pip install Flask
find . virtenv/
}}}

 * nano flaskproj.py
{{{#!highlight python
from flask import Flask

app = Flask(__name__)

@app.route("/")
def hello_world():
    return "<p>Hello World from Flask!</p>"
}}}

{{{#!highlight bash
export FLASK_APP=flaskproj
flask run  --host=0.0.0.0
# http://127.0.0.1:5000/
#  if the file is named app.py or wsgi.py, you don’t have to set the FLASK_APP environment
}}}