Example supervisor config file /etc/supervisor/conf.d/myapp.conf

supervisor.conf

[program:myapp]
autostart = true
autorestart = true
command = python /home/pi/myapp.py
environment=SECRET_ID="secret_id",SECRET_KEY="secret_key_avoiding_%_chars"
stdout_logfile = /home/pi/stdout.log
stderr_logfile = /home/pi/stderr.log
startretries = 3
user = pi

supervisor_cmd.sh

$ sudo apt-get install supervisor
$ sudo touch /etc/supervisor/conf.d/myapp.conf
$ sudo supervisorctl start myapp
$ sudo supervisorctl tail myapp
$ sudo supervisorctl status