How to create a systemd service for python script with virtualenv

gistfile1.txt

[Unit]
Description=Some description
After=network.target

[Service]
Type=simple
User=user
WorkingDirectory=/home/user/somedir
Environment=PYTHONPATH=/home/user/somedir
ExecStart=/home/user/venv/bin/python script.py
Restart=on-failure

[Install]
WantedBy=multi-user.target

I use the below to run a python discord bot script with virtualenv

[Unit]
Description=Embed Bot
After=multi-user.target

[Service]
User=discord
Group=discord
Type=idle
WorkingDirectory=/opt/discord/embeds/
ExecStart=/opt/discord/embeds/bot-env/bin/python3 start.py
Restart=on-failure

[Install]
WantedBy=multi-user.target

start.py is the bot itself.

/opt/discord/embeds - root with the bot script
/opt/discord/embeds/bot-env - virtualenv

Thank you this helped me solve an issue I was having!

[Unit]
Description="run-script"

[Service]
User=root
Group=root
WorkingDirectory=/usr/src/python3.9-venv/
Environment=PATH=/usr/src/python3.9-venv/bin
ExecStart=/bin/sh -c 'cd /usr/src/python3.9-venv/ && source /usr/src/python3.9-venv/bin/activate && python3.9 /usr/src/python3.9-venv/welcomer.py'
Restart=on-failure

[Install]
WantedBy=multi-user.target

VIRTUAL_ENV=/home/path/to/venv

@shoguevara you claim that your snippet is tested and works, but this line is not valid syntax.

VIRTUAL_ENV=/home/path/to/venv

@shoguevara you claim that your snippet is tested and works, but this line is not valid syntax.

Worked by the time I've tested it. Moved on since then, I cant even recall what app I was wrapping that time.

Do not use VIRTUAL_ENV var to specify the path, SystemD might complain, use PATH directly and also add /bin/ at the end of it, with your example it might be something like:

...
Environment=PATH=/home/path/to/venv/bin:$PATH
...

@federico-razzoli

@andreabenini I don't do it, I just pointed out that it's not valid syntax (Environment= is missing). In my case, systemd didn't complain about that variable, but using it changed nothing. PATH was also not a problem.

Systemd won't expand variables mentioned in Environment=