patch -p1 /usr/lib/python3.6/site-packages/wpreddit/wallpaper.py wallpaper.py.patch

wallpaper.py.patch

--- wallpaper.py.old	2017-01-09 11:05:16.554035609 +0300
+++ wallpaper.py	2017-01-09 11:34:56.456909197 +0300
@@ -51,6 +51,15 @@
                 os.system("xfconf-query -c xfce4-desktop -p " + prop + " -s 'true'")
     elif de in ["lubuntu", "Lubuntu"]:
         os.system("pcmanfm -w %s" % path)
+    elif de in  ["/usr/share/xsessions/plasma"]:
+        files = os.listdir(config.walldir)
+        for file in files:
+            if re.search('wallpaper[0-9]+\.jpg', file) is not None:
+                os.remove(config.walldir + "/" + file)
+        randint = random.randint(0, 65535)
+        randpath = os.path.expanduser(config.walldir + "/wallpaper%s.jpg" % randint)
+        shutil.copyfile(path, randpath)
+        os.system("ksetwallpaper %s" % randpath)
     else:
         if config.setcmd == '':
             print("Your DE could not be detected to set the wallpaper."