Update app.py

app.py

@@ -172,20 +172,33 @@
 
 # demo.launch()
 
+# import gradio as gr
+
+# def welcome(name):
+#     return f"Welcome to Gradio, {name}!"
+
+# with gr.Blocks() as demo:
+#     gr.Markdown(
+#     """
+#     # Hello World!
+#     Start typing below to see the output.
+#     """)
+#     inp = gr.Textbox(placeholder="What is your name?")
+#     out = gr.Textbox()
+#     inp.change(welcome, inp, out)
+
+# demo.launch()
+
 import gradio as gr
+import time
 
-def welcome(name):
-    return f"Welcome to Gradio, {name}!"
+with gr.Blocks() as interface:
+    dropdown = gr.Dropdown(choices=["Anna", "Christine", "Phoebe"])
+    dropdown2 = gr.Dropdown(choices=["Anna", "Christine", "Phoebe"])
+    btn = gr.Button("Trigger!")
 
-with gr.Blocks() as demo:
-    gr.Markdown(
-    """
-    # Hello World!
-    Start typing below to see the output.
-    """)
-    inp = gr.Textbox(placeholder="What is your name?")
-    out = gr.Textbox()
-    inp.change(welcome, inp, out)
+    btn.click(lambda: "Phoebe", None, dropdown)
+    dropdown.change(lambda x: x, dropdown, dropdown2)
 
-demo.launch()
+interface.launch()