If you install https://github.com/astral-sh/uv (it's really just two binaries... uv and uvx), then you can run many Python CLIs, and it will manage everything for you. This means resolving and downloading dependencies without touching your system Python. In this case, you'd type `uvx litecli`. If uvx can't find a suitable Python already installed, it will do its best to download a privately managed version. And it's very fast at doing all this.