demo 1

app.py

@@ -14,8 +14,8 @@ def nogpu():
 with gr.Blocks():
     outgpu = gr.Textbox(lines=5);
     outnpu = gr.Textbox(lines=5);
-    btngpu = gr.Button(label="gpu");
-    btngpun = gr.Button(label="ngpu");
+    btngpu = gr.Button(value="gpu");
+    btngpun = gr.Button(value="ngpu");
     
     btngpi.click(gpu, None, [outgpu]);
     btngpun.click(nogpu, None, [outnpu]);