Update app.py

app.py

@@ -1,4 +1,6 @@
 import numpy as np
+import gradio as gr
+
 
 def sepia(image):
     sepia_filter = np.array(
@@ -8,4 +10,8 @@ def sepia(image):
     )
     sepia_img = image.dot(sepia_filter.T)
     sepia_img /= sepia_img.max()
-    return sepia_img
+    return sepia_img
+
+
+# Write 1 line of Python to create a simple GUI
+gr.Interface(fn=sepia, inputs="image", outputs="image").launch()