Create app.py

app.py

@@ -0,0 +1,19 @@
+import gradio as gr
+import numpy as np
+
+counter = -1
+COLORS = [(255, 0, 0), (0, 255, 0), (0, 0, 255)]
+
+
+def fn():
+    global counter
+    counter = (counter + 1) % 3
+    return np.full((300, 300, 3), COLORS[counter], dtype=np.uint8)
+
+
+with gr.Blocks() as demo:
+    btn = gr.Button()
+    out = gr.Image()
+    gr.DeepLinkButton()
+    btn.click(fn=fn, outputs=out)
+demo.launch()