diff --git a/lab-python-flow-control.ipynb b/lab-python-flow-control.ipynb
index f4c7391..ab6f3af 100644
--- a/lab-python-flow-control.ipynb
+++ b/lab-python-flow-control.ipynb
@@ -37,6 +37,119 @@
     "\n",
     "3. Instead of updating the inventory by subtracting 1 from the quantity of each product, only do it for  the products that were ordered (those in \"customer_orders\")."
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "id": "972043e4-48cf-44f7-90a8-450238286efb",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Please give me the stock of t-shirt 5\n",
+      "Please give me the stock of mug 5\n",
+      "Please give me the stock of hat 5\n",
+      "Please give me the stock of book 5\n",
+      "Please give me the stock of keychain 5\n"
+     ]
+    }
+   ],
+   "source": [
+    "#1\n",
+    "from functools import reduce\n",
+    "products =[\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
+    "inventory = {}\n",
+    "for product in products:\n",
+    "    stock= input(f\"Please give me the stock of {product}\")    \n",
+    "    while not stock.isdigit():\n",
+    "        stock= input(f\"Please give me the stock of {product}\")\n",
+    "    inventory[product] = int(stock) \n",
+    "customer_orders = set()\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "id": "471d2af4-90ec-495f-90f0-5b5bf37eeb43",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "choose the product you want to buy : t-shirt, mug, hat, book, keychain  mug\n",
+      "Do you need more article : yes/no yes\n",
+      "choose the product you want to buy : t-shirt, mug, hat, book, keychain  book\n",
+      "Do you need more article : yes/no no\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'mug', 'book'}\n"
+     ]
+    }
+   ],
+   "source": [
+    "#2\n",
+    "need_more_item= True\n",
+    "user_product_choice = input(\"choose the product you want to buy : t-shirt, mug, hat, book, keychain \")\n",
+    "user_whishlist =  customer_orders.add(user_product_choice)\n",
+    "try:\n",
+    "\n",
+    "    while need_more_item:\n",
+    "         \n",
+    "        more_choice = input(\"Do you need more article : yes/no\")\n",
+    "        if bool(more_choice.strip().lower() == \"yes\"):\n",
+    "            user_product_choice = input(\"choose the product you want to buy : t-shirt, mug, hat, book, keychain \")\n",
+    "            user_whishlist =  customer_orders.add(user_product_choice)  \n",
+    "        else:\n",
+    "            need_more_item = False\n",
+    "                            \n",
+    "except:\n",
+    "    input(\"you didn't choose the right products types/number\")\n",
+    "print(customer_orders) \n",
+    "    "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "id": "2fa8fba4-f54b-46ec-b9f9-66293484adf5",
+   "metadata": {},
+   "outputs": [
+    {
+     "ename": "SyntaxError",
+     "evalue": "closing parenthesis '}' does not match opening parenthesis '(' (788843126.py, line 7)",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[1;36m  Cell \u001b[1;32mIn[7], line 7\u001b[1;36m\u001b[0m\n\u001b[1;33m    print(f\"The product {order_item} doesn't exist\"}\u001b[0m\n\u001b[1;37m                                                   ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m closing parenthesis '}' does not match opening parenthesis '('\n"
+     ]
+    }
+   ],
+   "source": [
+    "#3\n",
+    "\n",
+    "for order_item in customer_orders:\n",
+    "    try:\n",
+    "        inventory[order_item] -= 1\n",
+    "    except:\n",
+    "        print(f\"The product {order_item} doesn't exist\"}\n",
+    "\n",
+    "for key,value in inventory.items():\n",
+    "    print(f\"The updated stock for {key} is {value}\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "cc2ca850-73de-4c3b-aedb-4cbde6482295",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
@@ -55,7 +168,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.5"
   }
  },
  "nbformat": 4,