Update app.py

app.py

@@ -2,8 +2,15 @@ import pandas as pd
 import yfinance as yf
 import numpy as np
 import matplotlib.pyplot as plt
-import gradio as gr
 import io
+import gradio as gr
+
+def greet(name):
+    return f"Hello, {name}!"
+
+app = gr.Interface(fn=greet, inputs="text", outputs="text")
+app.launch()
+
 
 def sma_crossover_strategy(initial_budget, start_date, end_date, ticker):
     try: