# libtmux._vendor.version._parse_letter_version

- **Module:** libtmux._vendor.version
- **Package:** libtmux
- **Language:** Python
- **Kind:** function
- **Source:** https://github.com/tmux-python/libtmux/blob/036c521c4b83ce6e434eb50afe2a0d08a6a05e46/src/libtmux/_vendor/version.py#L472
- **Page:** https://libtmux.org/reference/py/libtmux-_vendor-version-_parse_letter_version/

```
libtmux._vendor.version._parse_letter_version(letter: str, number: str | bytes | t.SupportsInt) -> tuple[str, int] | None
```