How to add built-in function (gettext) to pyright?

Question

I have a python project with gettext. And I use gettext.install for adding _ to built-ins, so it works correctly. But my pyright always shows error: _ is not defined. How can I let pyright know this function?

My pyrightconfig.json:

{
    "venvPath": ".",
    "venv": "env"
}