Update app.py

app.py

@@ -14,7 +14,7 @@ def app():
     st.title("Pizza Sales Data Analysis Dashboard")
     df = load_data()
     
-    total_orders = df['order_id'].drop_duplicates()    #function which can calculate the number of unique values
+    total_orders = df['order_id'].value_counts()    #function which can calculate the number of unique values
     total_revenue = df['total_price'].sum()  #function which can sum the column
     most_popular_size = df['pizza_size'].value_counts().idxmax()    #function which can get the maximum value 
     most_frequent_category = df['pizza_category'].value_counts().idxmax()    #function which can count of value of each product
@@ -25,6 +25,7 @@ def app():
     st.sidebar.metric("Most Popular Size", most_popular_size)
     st.sidebar.metric("Most Popular Category", most_frequent_category)
     st.sidebar.metric("Total Pizzas Sold", total_pizzas_sold)
+    st.sidebar.metric("Total Orders", total_orders)
     plots = [
         {"title": "Top Selling Pizzas (by Quantity)", "x": "pizza_name", "y": "quantity", "top": 5},    #Write the appropriiate column as per the title given
         {"title": "Quantity of Pizzas Sold by Category and Time of the Day", "x": "order_time", "hue": "pizza_category"},   #Write the appropriiate column as per the title given