[Unit]
 Description=check for python scripts, if absent lauch talk2me.py

 [Service]
 Type=exec
 User=user
 WorkingDirectory=/home/user
 ExecStart=python /path/to/script.py
# ExecStart=/bin/bash --login -c 'source /home/user/.bashrc; cd /home/user/ && python /path/to/script.py '
 RemainAfterExit=true