Systemd service file. Includes environment variables and logging.

client.service

[Unit]
Description=Web Client Service
After=multi-user.target
Conflicts=getty@tty1.service

[Service]
Type=simple
# optional environment variable location which will be converted to variables readable by this file
# in this case $FLAGS
EnvironmentFile=/etc/default/webclient
ExecStart=/usr/bin/python /usr/local/bin/client/main.py $FLAGS
StandardInput=tty-force
# comment out the standard output or error if script includes logging to a file already
StandardOutput=file:/var/log/webclient.log
StandardError=file:/var/log/webclient.log
Restart=always
RestartSec=5

[Install]
WantedBy=multi-user.target