Create app.py

app.py

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+# This is a simple Gradio app that greets the user.
+import gradio as gr
+
+# Define a function that takes a name and returns a greeting.
+def greet(name):
+    return "Hello " + name + "!"
+
+# Create a Gradio interface that takes a textbox input, runs it through the greet function, and returns output to a textbox.
+demo = gr.Interface(fn=greet, inputs="textbox", outputs="textbox")
+
+# Launch the interface.
+if __name__ == "__main__":
+    demo.launch(show_error=True)