How to disable powerline symbols?

I use powerline installed with pip install powerline-status.

Is there a way to just disable fancy symbols, so I do not have to configure any font to make it work, whatever environment and segments I use?

There is a ascii only theme provided by default.

To activate it, set the following code in .config/powerline/config.json.

{
    "common": {
        "default_top_theme": "ascii"
    },
}