Simple Systemd blocking service auto start

foo.service

#/etc/systemd/system/foo.service

[Unit]
#Description of the service
Description=foo
#Auto start on reboot when the target user target is availaible
After=multi-user.target

[Service]
#Switching the working directory (not needed, just an example)
WorkingDirectory=/usr/local
#Simple blocking call in python
ExecStart=/usr/bin/python -c "while 1:import time;time.sleep(1)"

[Install]
#Install as a multi user target (default)
WantedBy=multi-user.target

# need to enable the service after creating the file this will create a simlink from the service to the multi-user.target directory
# sudo systemctl enable foo.service

# Get the status of the service (should be loaded but inactive/dead)
# sudo systemctl status foo

# Start the service
# sudo systemctl start foo

# Stop the service
# sudo systemctl stop foo