requirements.txt

app.py

@@ -0,0 +1,102 @@
+import gradio as gr
+
+# Initial Inventory Data: (ID, Name, Price per KG)
+inventory = [
+    (101, "Apple", 120),
+    (102, "Banana", 50),
+    (103, "Mango", 80),
+    (104, "Grapes", 90),
+    (105, "Orange", 70)
+]
+
+# Global cart state for the session
+shopping_cart = []
+
+def get_inventory_table():
+    """Formats inventory for display."""
+    table = "| ID | Product Name | Price (per KG) |\n|---|---|---|\n"
+    for item in inventory:
+        table += f"| {item[0]} | {item[1]} | ₹{item[2]} |\n"
+    return table
+
+def add_item_to_cart(item_id):
+    """Adds an item from inventory to the global cart."""
+    try:
+        item_id = int(item_id)
+        # Find item in inventory
+        product = next((item for item in inventory if item[0] == item_id), None)
+        
+        if product:
+            shopping_cart.append(product)
+            return f"✅ Added {product[1]} to cart!", display_cart(), total_cost()
+        else:
+            return "❌ Error: Product ID not found in inventory.", display_cart(), total_cost()
+    except ValueError:
+        return "❌ Error: Please enter a valid numerical ID.", display_cart(), total_cost()
+
+def remove_item(cart_index):
+    """Removes an item from the cart based on its display index."""
+    try:
+        idx = int(cart_index) - 1  # Convert 1-based UI index to 0-based list index
+        if 0 <= idx < len(shopping_cart):
+            removed = shopping_cart.pop(idx)
+            return f"🗑️ Removed {removed[1]} from cart.", display_cart(), total_cost()
+        else:
+            return "❌ Error: Invalid cart index.", display_cart(), total_cost()
+    except ValueError:
+        return "❌ Error: Please enter a valid numerical index.", display_cart(), total_cost()
+
+def display_cart():
+    """Returns a formatted string representing the cart."""
+    if not shopping_cart:
+        return "Your cart is currently empty."
+    
+    cart_display = "| # | Name | Price |\n|---|---|---|\n"
+    for i, item in enumerate(shopping_cart, 1):
+        cart_display += f"| {i} | {item[1]} | ₹{item[2]} |\n"
+    return cart_display
+
+def total_cost():
+    """Calculates the sum of prices in the cart."""
+    total = sum(item[2] for item in shopping_cart)
+    return f"### Total Bill: ₹{total}"
+
+# --- Gradio Interface ---
+
+with gr.Blocks(theme=gr.themes.Soft()) as demo:
+    gr.Markdown("# 🍎 Fruit Seller Shopping Cart System")
+    gr.Markdown("Manage your inventory and billing seamlessly.")
+    
+    with gr.Row():
+        with gr.Column():
+            gr.Markdown("### 📦 Available Inventory")
+            gr.Markdown(get_inventory_table())
+            
+            product_input = gr.Textbox(label="Enter Product ID to Add", placeholder="e.g., 101")
+            add_btn = gr.Button("Add to Cart", variant="primary")
+            
+        with gr.Column():
+            gr.Markdown("### 🛒 Your Shopping Cart")
+            cart_output = gr.Markdown(display_cart())
+            total_output = gr.Markdown(total_cost())
+            
+            remove_input = gr.Textbox(label="Enter Cart # to Remove", placeholder="e.g., 1")
+            remove_btn = gr.Button("Remove Item", variant="stop")
+            
+    status_msg = gr.Textbox(label="System Status", interactive=False)
+
+    # Interactivity
+    add_btn.click(
+        add_item_to_cart, 
+        inputs=[product_input], 
+        outputs=[status_msg, cart_output, total_output]
+    )
+    
+    remove_btn.click(
+        remove_item, 
+        inputs=[remove_input], 
+        outputs=[status_msg, cart_output, total_output]
+    )
+
+if __name__ == "__main__":
+    demo.launch()