diff --git a/lab-python-data-structures.ipynb b/lab-python-data-structures.ipynb
index 5b3ce9e0..01f075dd 100644
--- a/lab-python-data-structures.ipynb
+++ b/lab-python-data-structures.ipynb
@@ -50,6 +50,175 @@
     "\n",
     "Solve the exercise by implementing the steps using the Python concepts of lists, dictionaries, sets, and basic input/output operations. "
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Please input the quantity of product t-shirt: 10\n",
+      "Please input the quantity of product mug: 10\n",
+      "Please input the quantity of product hat: 10\n",
+      "Please input the quantity of product book: 10\n",
+      "Please input the quantity of product keychain: 10\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'t-shirt': 10, 'mug': 10, 'hat': 10, 'book': 10, 'keychain': 10}\n"
+     ]
+    }
+   ],
+   "source": [
+    "# create a product list, inventory dictionary\n",
+    "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
+    "\n",
+    "inventory = {} \n",
+    "\n",
+    "for p in products:\n",
+    "    quantity = int(input(f\"Please input the quantity of product {p}:\"))\n",
+    "    inventory[p] = quantity\n",
+    "    \n",
+    "print(inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": true,
+    "jupyter": {
+     "outputs_hidden": true
+    }
+   },
+   "outputs": [
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Please input the name of product that a customer wants to order: mug\n",
+      "Please input the name of product that a customer wants to order: hat\n",
+      "Please input the name of product that a customer wants to order: book\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'hat', 'mug', 'book'}\n"
+     ]
+    }
+   ],
+   "source": [
+    "# create a customer order set\n",
+    "\n",
+    "customer_orders = set()\n",
+    "  \n",
+    "for i in range(3):\n",
+    "    product = input(\"Please input the name of product that a customer wants to order:\")\n",
+    "    customer_orders.add(product)\n",
+    "\n",
+    "print(customer_orders)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# ---------------------------------------only execute below codes---------------------------------------------------------------------------------------"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Order Statistics:\n",
+      "  Total Products Ordered: 3\n",
+      "  Percentage of Products Ordered: 60% \n"
+     ]
+    }
+   ],
+   "source": [
+    "# create 0rder_Stats tuple\n",
+    "\n",
+    "Total_Products_Ordered = len(customer_orders)\n",
+    "Percentage_of_Products_Ordered = (Total_Products_Ordered/len(inventory))\n",
+    "\n",
+    "order_status = (Total_Products_Ordered,Percentage_of_Products_Ordered)\n",
+    "\n",
+    "print(f\"Order Statistics:\\n  Total Products Ordered: {order_status[0]}\\n  Percentage of Products Ordered: {order_status[1]*100:.0f}% \") \n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'t-shirt': 10, 'mug': 9, 'hat': 9, 'book': 9, 'keychain': 10}\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Update the inventory by subtracting 1 from the quantity of each product. Modify the `inventory` dictionary accordingly.\n",
+    "\n",
+    "for o in customer_orders:\n",
+    "    inventory[o] -= 1\n",
+    "    \n",
+    "print(inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "updated inventory overview:\n",
+      "\n",
+      "t-shirt 10\n",
+      "mug 9\n",
+      "hat 9\n",
+      "book 9\n",
+      "keychain 10\n"
+     ]
+    }
+   ],
+   "source": [
+    "#  Print the updated inventory, displaying the quantity of each product on separate lines.\n",
+    "\n",
+    "print(f\"updated inventory overview:\\n\")\n",
+    "\n",
+    "for k,v in inventory.items():    \n",
+    "    print(f\"{k} {v}\")\n",
+    "   "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
@@ -68,7 +237,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.10.10"
   }
  },
  "nbformat": 4,