# libtmux.Session.search_windows

- **Module:** libtmux.Session
- **Package:** libtmux
- **Language:** Python
- **Kind:** method
- **Source:** https://github.com/tmux-python/libtmux/blob/036c521c4b83ce6e434eb50afe2a0d08a6a05e46/src/libtmux/session.py#L302
- **Page:** https://libtmux.org/reference/py/libtmux-session-search_windows/

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

Windows in this session, optionally filtered by tmux.

Like :attr:`Session.windows` but with a ``filter`` kwarg passed to
``$ tmux list-windows -t <session> -f <filter>``.

## Parameters

- `self`
- `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:
- `# noqa: A002`

## Example

```python
>>> _ = session.new_window(window_name='gap7s_target')
>>> _ = session.new_window(window_name='other_window')
>>> matches = session.search_windows(filter='#{m:gap7s_*,#{window_name}}')
>>> [w.window_name for w in matches]
['gap7s_target']
```