# libtmux.common.get_version_str

- **Module:** libtmux.common
- **Package:** libtmux
- **Language:** Python
- **Kind:** function
- **Source:** https://github.com/tmux-python/libtmux/blob/036c521c4b83ce6e434eb50afe2a0d08a6a05e46/src/libtmux/common.py#L435
- **Page:** https://libtmux.org/reference/py/libtmux-common-get_version_str/

```
libtmux.common.get_version_str(tmux_bin: str | None = None) -> str
```

Return the tmux version string verbatim, preserving letter suffixes.

:func:`get_version` normalizes point releases for numeric comparison
(``"3.7a"`` becomes ``LooseVersion("3.7")``). This helper keeps the raw
suffix, so callers can distinguish patch releases whose behavior differs
-- for example the tmux 3.7 break-pane crash, reverted in 3.7a.

## Parameters

- `tmux_bin` (str | None) — Path to tmux binary. If *None*, uses the system tmux.

## Returns

str
    Raw tmux version, e.g. ``"3.7a"``. Git builds return ``"master"``;
    OpenBSD base tmux returns ``"<max>-openbsd"``.

## Example

```python
>>> isinstance(get_version_str(), str)
True
```