Update app.py

app.py

@@ -1,4 +1,25 @@
-import streamlit as st
-
-x = st.slider('Select a value')
-st.write(x, 'squared is', x * x)
+import streamlit as st
+import pandas as pd
+import folium
+
+# Set title of the app
+st.title('Streamlit with Leaflet')
+
+# Create a sample dataframe
+data = pd.DataFrame({
+    'lat': [37.7749, 34.0522, 40.7128],
+    'lon': [-122.4194, -118.2437, -74.0060],
+    'name': ['San Francisco', 'Los Angeles', 'New York']
+})
+
+# Display a header
+st.subheader('Map of Cities')
+
+# Display the map using Folium
+my_map = folium.Map(location=[data['lat'].mean(), data['lon'].mean()], zoom_start=4)
+
+for i, row in data.iterrows():
+    folium.Marker([row['lat'], row['lon']], popup=row['name']).add_to(my_map)
+
+# Render the map in Streamlit
+folium_static(my_map)