Update app.py

app.py

@@ -9,9 +9,11 @@ import soundfile as sf
 import requests
 import pandas as pd  # If you're working with DataFrames
 import matplotlib.figure  # If you're using matplotlib figures
+import numpy as np
 
 # For Altair charts
-import streamlit.graphics_altair
+import altair as alt
+
 # For Bokeh charts
 import streamlit.graphics_bokeh