# libtmux.Server.lock_server

- **Module:** libtmux.Server
- **Package:** libtmux
- **Language:** Python
- **Kind:** method
- **Source:** https://github.com/tmux-python/libtmux/blob/036c521c4b83ce6e434eb50afe2a0d08a6a05e46/src/libtmux/server.py#L831
- **Page:** https://libtmux.org/reference/py/libtmux-server-lock_server/

```
libtmux.Server.lock_server(self) -> None
```

Lock the tmux server via ``$ tmux lock-server``.

Requires an attached client.

>>> with control_mode() as ctl:
...     server.lock_server()