Update app.py

app.py

@@ -209,25 +209,25 @@ class ManimAnimationGenerator:
                 return None, f"❌ Validation Error: {message}", ""
             
             # Dynamically inject portrait (9:16) config
-            portrait_config = """
-        from manim import config
-        # Maintain chosen quality while forcing 9:16 aspect ratio
-        if config["pixel_height"] == 480:
-            config.pixel_height = 854  # low
-            config.pixel_width = 480
-        elif config["pixel_height"] == 720:
-            config.pixel_height = 1280  # medium
-            config.pixel_width = 720
-        elif config["pixel_height"] == 1080:
-            config.pixel_height = 1920  # high
-            config.pixel_width = 1080
-        else:
-            config.pixel_height = 854
-            config.pixel_width = 480
-        
-        config.frame_height = 16
-        config.frame_width = 9
-        """
+            portrait_config = (
+                "from manim import config\n"
+                "# Maintain chosen quality while forcing 9:16 aspect ratio\n"
+                "if config.pixel_height == 480:\n"
+                "    config.pixel_height = 854  # low\n"
+                "    config.pixel_width = 480\n"
+                "elif config.pixel_height == 720:\n"
+                "    config.pixel_height = 1280  # medium\n"
+                "    config.pixel_width = 720\n"
+                "elif config.pixel_height == 1080:\n"
+                "    config.pixel_height = 1920  # high\n"
+                "    config.pixel_width = 1080\n"
+                "else:\n"
+                "    config.pixel_height = 854\n"
+                "    config.pixel_width = 480\n"
+                "config.frame_height = 16\n"
+                "config.frame_width = 9\n"
+            )
+
         
             code = portrait_config + "\n" + code