# libtmux.Window.index

- **Module:** libtmux
- **Package:** libtmux
- **Language:** Python
- **Kind:** property
- **Source:** https://github.com/tmux-python/libtmux/blob/38e368c11117fb4aeb2f082d552cd4f210eae06a/src/libtmux/window.py#L1671
- **Page:** https://libtmux.org/en/py/stable/reference/libtmux-window-index/

```
libtmux.Window.index(self) -> str | None
```

Alias of :attr:`Window.window_index`.

```python
>>> window.index
'1'
```

```python
>>> window.index == window.window_index
True
```

## In other ports

### A window's index in its session

- Ruby: [`LibTmux::WindowLinkSnapshot#index`](/en/ruby/latest/reference/libtmux-windowlinksnapshot-index/) (method)
- Rust: [`window.Window.index`](/en/rs/latest/reference/window-window-index/) (method)
- Go: [`tmux.Window.Index`](/en/go/latest/reference/tmux-window-index/) (method)
- Java: [`io.github.libtmux.Window.Window.index`](/en/java/latest/reference/io-github-libtmux-window-window-index/) (method)
- C#: [`LibTmux.Window.Index`](/en/csharp/latest/reference/libtmux-window-index/) (property)
- C++: [`libtmux::Window::index`](/en/cxx/latest/reference/libtmux-window-index-1i4m/) (method)