# libtmux._internal.query_list.QueryList.pk_key

- **Module:** libtmux._internal.query_list
- **Package:** libtmux
- **Language:** Python
- **Kind:** attribute
- **Source:** https://github.com/tmux-python/libtmux/blob/38e368c11117fb4aeb2f082d552cd4f210eae06a/src/libtmux/_internal/query_list.py#L477
- **Page:** https://libtmux.org/en/py/stable/reference/libtmux-_internal-query_list-querylist-pk_key/