Setup wallpaper image in plasma shell (Cli)

kwallpaper.py

from subprocess import call
from argparse import ArgumentParser
JS = """
/*
* This script is meant to be run from the python interface below.
*/
const allDesktops = desktops();

for (desktop of allDesktops){{
   desktop.wallpaperPlugin = "org.kde.image";
   desktop.currentConfigGroup = Array("Wallpaper",
                                "org.kde.image",
                                "General");
   desktop.writeConfig("Image", `file://{fname}`)
}}
"""

def main():
  parser = ArgumentParser("set-wallpaper")
  parser.add_argument("file", help="File location",)
  args = parser.parse_args()
  call([
    "qdbus",
    "org.kde.plasmashell",
    "/PlasmaShell",
    "org.kde.PlasmaShell.evaluateScript",
    JS.format(fname=args.file),
  ])


if __name__ == "__main__":
  main()

set_wallpaper.js

/*
* This script is meant to be run from the python interface (set-wallpaper.py).
*/
const allDesktops = desktops();

for (desktop of allDesktops){
   desktop.wallpaperPlugin = "org.kde.image";
   desktop.currentConfigGroup = Array("Wallpaper",
                                "org.kde.image",
                                "General");
   desktop.writeConfig("Image", `file://{fname}`)
}