Update app.py

app.py

@@ -2,8 +2,21 @@ import streamlit as st
 import pandas as pd
 import plotly.express as px
 import plotly.graph_objects as go
-import random
-from datetime import datetime, timedelta
+
+# Sample Data Format
+st.subheader('Sample Data Format:')
+st.write("""
+The data should be in the following format with the listed columns:
+
+| Customer Name | Date       | City         | Country     | State       | Product Name   | Product Attribute 1 | Product Attribute 2 | Product Attribute 3 | Product Attribute 4 | Net Sales Value | Margin Amount | Cost  |
+|----------------|------------|--------------|-------------|-------------|-----------------|---------------------|---------------------|---------------------|---------------------|------------------|---------------|-------|
+| John Doe       | 2024-01-01 | New York     | USA         | NY          | Product A       | Attribute 1A         | Attribute 2A         | Attribute 3A         | Attribute 4A         | 1000             | 300           | 700   |
+| Jane Smith     | 2024-01-02 | Los Angeles  | USA         | CA          | Product B       | Attribute 1B         | Attribute 2B         | Attribute 3B         | Attribute 4B         | 1500             | 400           | 1100  |
+| Bob Johnson    | 2024-02-15 | Chicago      | USA         | IL          | Product A       | Attribute 1A         | Attribute 2A         | Attribute 3A         | Attribute 4A         | 1200             | 350           | 850   |
+| Alice Williams | 2024-03-10 | Miami        | USA         | FL          | Product C       | Attribute 1C         | Attribute 2C         | Attribute 3C         | Attribute 4C         | 2000             | 500           | 1500  |
+| Charlie Brown  | 2024-04-05 | Houston      | USA         | TX          | Product B       | Attribute 1B         | Attribute 2B         | Attribute 3B         | Attribute 4B         | 1800             | 450           | 1350  |
+
+""")
 
 # File upload functionality
 st.sidebar.header("Upload Data")