# libtmux._vendor.version.Version.is_devrelease

- **Module:** libtmux._vendor.version.Version
- **Package:** libtmux
- **Language:** Python
- **Kind:** property
- **Source:** https://github.com/tmux-python/libtmux/blob/036c521c4b83ce6e434eb50afe2a0d08a6a05e46/src/libtmux/_vendor/version.py#L430
- **Page:** https://libtmux.org/reference/py/libtmux-_vendor-version-version-is_devrelease/

```
libtmux._vendor.version.Version.is_devrelease(self) -> bool
```

Whether this version is a development release.

>>> Version("1.2.3").is_devrelease
False
>>> Version("1.2.3.dev1").is_devrelease
True