QR invite fixes

qrinvite/qrinvite.py

@@ -2,13 +2,10 @@ import pathlib
 
 import aiohttp
 import discord
-from PIL import Image
-
-from redbot.core import Config, checks, commands
-
-from redbot.core.bot import Red
-
 from MyQR import myqr
+from PIL import Image
+from redbot.core import Config, commands
+from redbot.core.bot import Red
 from redbot.core.data_manager import cog_data_path
 
 
@@ -46,6 +43,11 @@ class QRInvite:
         if image_url is None:
             image_url = ctx.guild.icon_url
 
+        if image_url == "":  # Still
+            await ctx.send(
+                "Could not get an image, please provide one. *(`{}help qrinvite` for details)*".format(ctx.prefix))
+            return
+
         extension = pathlib.Path(image_url).parts[-1].replace('.', '?').split('?')[1]
 
         path: pathlib.Path = cog_data_path(self)
@@ -69,6 +71,7 @@ class QRInvite:
         with png_path.open("rb") as png_fp:
             await ctx.send(file=discord.File(png_fp.read(), "qrcode.png"))
 
+
 def convert_png(path):
     im = Image.open(path)
     im.load()
@@ -76,6 +79,6 @@ def convert_png(path):
     im = im.convert('RGB').convert('P', palette=Image.ADAPTIVE, colors=255)
     mask = Image.eval(alpha, lambda a: 255 if a <= 128 else 0)
     im.paste(255, mask)
-    newPath = path.replace(".webp",".png")
-    im.save(newPath, transparency=255)
-    return newPath
+    new_path = path.replace(".webp", ".png")
+    im.save(new_path, transparency=255)
+    return new_path