# libtmux.exc.BadSessionName.__init__

- **Module:** libtmux.exc.BadSessionName
- **Package:** libtmux
- **Language:** Python
- **Kind:** method
- **Source:** https://github.com/tmux-python/libtmux/blob/036c521c4b83ce6e434eb50afe2a0d08a6a05e46/src/libtmux/exc.py#L314
- **Page:** https://libtmux.org/reference/py/libtmux-exc-badsessionname-__init__/

```
libtmux.exc.BadSessionName.__init__(self, reason: str, session_name: str | None = None, args: object) -> None
```