Update app.py

app.py

@@ -9,6 +9,7 @@ from matplotlib import animation
 from mpl_toolkits.mplot3d import Axes3D
 from streamlit.components.v1 import html
 import matplotlib.colors as mpl
+from PIL import Image
 
 # Sidebar for selecting an option
 sidebar_option = st.sidebar.radio("Select an option",