code: def set_desktop_wallpaper(desktop, img):
      
      desktop = str(desktop).lower()
  
      if "xfce" in desktop or "xubuntu" in desktop:
          # XFCE requires two commands since they differ between versions.
          xfconf("/backdrop/screen0/monitor0/image-path", img)
          xfconf("/backdrop/screen0/monitor0/workspace0/last-image", img)
  
      elif "muffin" in desktop or "cinnamon" in desktop:
          util.disown(["gsettings", "set",
                       "org.cinnamon.desktop.background",
                       "picture-uri", "file://" + urllib.parse.quote(img)])
  
      elif "gnome" in desktop or "unity" in desktop:
          util.disown(["gsettings", "set",
                       "org.gnome.desktop.background",
                       "picture-uri", "file://" + urllib.parse.quote(img)])
  
      elif "mate" in desktop:
          util.disown(["gsettings", "set", "org.mate.background",
                       "picture-filename", img])
  
      elif "sway" in desktop:
          util.disown(["swaymsg", "output", "*", "bg", img, "fill"])
  
      elif "awesome" in desktop:
          util.disown(["awesome-client",
                       "require('gears').wallpaper.maximized('{img}')"
                       .format(**locals())])
  
      else:
          set_wm_wallpaper(img)
docs: Set the wallpaper for the desktop environment.