Attempting to make image url logic more robust

ImageColorizerColab.ipynb

@@ -225,7 +225,7 @@
    "outputs": [],
    "source": [
     "if source_url is not None and source_url !='':\n",
-    "    colorizer.plot_transformed_image_from_url(path=\"test_images/image.jpg\", url=source_url, render_factor=render_factor)\n",
+    "    colorizer.plot_transformed_image_from_url(url=source_url, render_factor=render_factor)\n",
     "else:\n",
     "    print('Provide an image url and try again.')"
    ]
@@ -241,7 +241,7 @@
     "\n",
     "* In the menu to the left, click **Files**\n",
     "* If you don't see the 'DeOldify' folder, click \"Refresh\"\n",
-    "* By default, rendered image will be in /DeOldify/result_images/"
+    "* By default, rendered image will be in /DeOldify/result_images/image.png"
    ]
   },
   {

fasterai/visualize.py

@@ -30,9 +30,9 @@ class ModelImageVisualizer():
     def _open_pil_image(self, path:Path)->Image:
         return PIL.Image.open(path).convert('RGB')
 
-    def plot_transformed_image_from_url(self, path:str, url:str, figsize:(int,int)=(20,20), render_factor:int=None)->Image:
+    def plot_transformed_image_from_url(self, url:str, path:str='test_images/image.png', figsize:(int,int)=(20,20), render_factor:int=None)->Image:
         response = requests.get(url)
-        img = Image.open(BytesIO(response.content))
+        img = Image.open(BytesIO(response.content)).convert('RGB')
         img.save(path)
         return self.plot_transformed_image(path=path, figsize=figsize, render_factor=render_factor)