# libtmux.Server.search_windows

- **Module:** libtmux
- **Package:** libtmux
- **Language:** Python
- **Kind:** method
- **Source:** https://github.com/tmux-python/libtmux/blob/38e368c11117fb4aeb2f082d552cd4f210eae06a/src/libtmux/server.py#L2552
- **Page:** https://libtmux.org/en/py/stable/reference/libtmux-server-search_windows/

```
libtmux.Server.search_windows(
    self, filter: str | None = None, # noqa: A002
) -> QueryList[Window]
```

All windows across sessions, optionally filtered by tmux.

Like :attr:`Server.windows` but with a ``filter`` kwarg passed to
[`$ tmux list-windows -a -f <filter>`](/en/tmux/latest/manual/list-windows/).

## Examples

```python
>>> sess = server.new_session(session_name='gap7_win_demo')
>>> _ = sess.new_window(window_name='gap7_target')
>>> _ = sess.new_window(window_name='other_window')
>>> matches = server.search_windows(filter='#{m:gap7_*,#{window_name}}')
>>> any(w.window_name == 'gap7_target' for w in matches)
True
>>> any(w.window_name == 'other_window' for w in matches)
False
```

## Parameters

- `filter` (`str | None`): tmux format expression (``-f`` flag).
tmux silently expands a malformed filter (unclosed
``#{...}``, unknown format token) to empty, which the
filter treats as false — every row is suppressed and no
stderr is emitted. A bad filter is
indistinguishable from "filter matched nothing"; verify
filter syntax against the FORMATS section of ``tmux(1)``. Warning: (added 0.57)
- `# noqa: A002`

## In other ports

### Filter every window with a tmux expression

- Go: [`tmux.Server.SearchWindows`](/en/go/latest/reference/tmux-server-searchwindows/) (method)
- C#: [`LibTmux.Server.SearchWindowsAsync`](/en/csharp/latest/reference/libtmux-server-searchwindowsasync/) (method)