Fail with message if no suitable image available

EditionOpenAccess · Jul 2, 2021 · 9d1e91f · 9d1e91f
1 parent 803f3ea
commit 9d1e91f
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/src/mkimage.py b/src/mkimage.py
@@ -55,7 +55,12 @@ def get_cover_image(image_path):
         ratio = calculate_ratio(tmp_image)
         if ratio < 1:
             candidates.remove(image)
-    chosen_image = random.choice(candidates)
+    try:
+        chosen_image = random.choice(candidates)
+    except IndexError:
+        logging.error("No suitable image found. Exiting.")
+        sys.exit()
+
     return chosen_image
 # def get_cover_image ends here