example of a systemd service file running a python + flask + gunicorn application

python-flask.service

[Unit]
Description=Gunicorn instance to serve python-flask
After=network.target

[Service]
User=centos
Group=centos
WorkingDirectory=/home/centos/python-flask
Environment="PATH=/home/centos/miniconda2/envs/python-flask/bin"
ExecStart=/home/centos/miniconda2/envs/python-flask/bin/gunicorn --bind 0.0.0.0:8000 wsgi 
# ExecStart=/home/centos/miniconda2/envs/python-flask/bin/gunicorn --workers 2 --bind unix:api.sock -m 007 wsgi 
# https://www.digitalocean.com/community/tutorials/how-to-serve-flask-applications-with-gunicorn-and-nginx-on-centos-7

[Install]
WantedBy=multi-user.target