Update app.py

app.py

@@ -1,21 +1,21 @@
 import gradio as gr
 
 # -----------------------------
-# Module 1: Data Structures
+# Module 1: Data Structures (USD)
 # -----------------------------
 
 Inventory = [
-    (101, "Hammer", 120),
-    (102, "Screwdriver Set", 350),
-    (103, "Drill Machine", 2500),
-    (104, "Pliers", 180),
-    (105, "Wrench", 220),
+    (101, "Hammer", 1.20),
+    (102, "Screwdriver Set", 3.50),
+    (103, "Drill Machine", 25.00),
+    (104, "Pliers", 1.80),
+    (105, "Wrench", 2.20),
 ]
 
-# Convert to a lookup dictionary for fast access
+# Lookup dictionary for fast access
 inventory_lookup = {item[0]: {"name": item[1], "price": item[2]} for item in Inventory}
 
-# Cart is a list of item IDs
+# Cart holds item IDs
 My_Cart = []
 
 
@@ -41,24 +41,35 @@ def get_cart_contents():
     lines = []
     for item_id in My_Cart:
         item = inventory_lookup[item_id]
-        lines.append(f"{item_id} - {item['name']} - ₹{item['price']}")
+        lines.append(f"{item_id} - {item['name']} - ${item['price']:.2f}")
     return "\n".join(lines)
 
 def calculate_total():
     total = sum(inventory_lookup[item_id]["price"] for item_id in My_Cart)
-    return f"Total Amount: ₹{total}"
+    return f"Total Amount: ${total:.2f}"
 
 
 # -----------------------------
-# Module 3: Gradio Callbacks
+# Module 3: Helpers for Dropdown Text
 # -----------------------------
 
-def handle_add(selected_id):
-    msg = add_to_cart(selected_id)
+def extract_id(choice_text):
+    # Dropdown text looks like: "101 - Hammer - $1.20"
+    return int(choice_text.split(" - ")[0])
+
+
+# -----------------------------
+# Module 4: Gradio Callbacks
+# -----------------------------
+
+def handle_add(selected_text):
+    item_id = extract_id(selected_text)
+    msg = add_to_cart(item_id)
     return get_cart_contents(), msg
 
-def handle_remove(selected_id):
-    msg = remove_from_cart(selected_id)
+def handle_remove(selected_text):
+    item_id = extract_id(selected_text)
+    msg = remove_from_cart(item_id)
     return get_cart_contents(), msg
 
 def handle_total():
@@ -66,24 +77,29 @@ def handle_total():
 
 
 # -----------------------------
-# Module 4: Gradio Interface
+# Module 5: Gradio Interface
 # -----------------------------
 
-with gr.Blocks(title="Hardware Store Billing System") as demo:
+with gr.Blocks(title="Hardware Store Billing System (USD)") as demo:
+
+    gr.Markdown("## 🧰 Hardware Store Billing System (USD)")
 
-    gr.Markdown("## 🧰 Hardware Store Billing System")
+    # Dropdowns show: "101 - Hammer - $1.20"
+    formatted_choices = [
+        f"{item[0]} - {item[1]} - ${item[2]:.2f}" for item in Inventory
+    ]
 
     with gr.Row():
         add_dropdown = gr.Dropdown(
-            choices=[item[0] for item in Inventory],
-            label="Select Item to Add (by ID)"
+            choices=formatted_choices,
+            label="Select Item to Add"
         )
         add_button = gr.Button("Add Tool")
 
     with gr.Row():
         remove_dropdown = gr.Dropdown(
-            choices=[item[0] for item in Inventory],
-            label="Select Item to Remove (by ID)"
+            choices=formatted_choices,
+            label="Select Item to Remove"
         )
         remove_button = gr.Button("Remove Tool")