# libtmux.exc.NotInsideTmux.__init__

- **Module:** libtmux.exc.NotInsideTmux
- **Package:** libtmux
- **Language:** Python
- **Kind:** method
- **Source:** https://github.com/tmux-python/libtmux/blob/9fdd083a8181a827889337b63cd4e6daea661a8c/src/libtmux/exc.py#L139
- **Page:** https://libtmux.org/en/py/latest/reference/libtmux-exc-notinsidetmux-__init__/

```
libtmux.exc.NotInsideTmux.__init__(self, variable: str | None = None, args: object, reason: str = "unset or empty") -> None
```