diff --git a/lab-python-error-handling.ipynb b/lab-python-error-handling.ipynb
index 3e50ef8..c888f46 100644
--- a/lab-python-error-handling.ipynb
+++ b/lab-python-error-handling.ipynb
@@ -44,10 +44,167 @@
    "execution_count": null,
    "id": "cc2c441d-9dcf-4817-b097-cf6cbe440846",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Choose the quantity of each product\n",
+      "Choose the quantity of mug\n"
+     ]
+    }
+   ],
    "source": [
-    "# your code goes here"
+    "products = [\"mug\", \"hat\", \"book\"]\n",
+    "\n",
+    "def initialize_inventory(products):\n",
+    "    print (\"Choose the quantity of each product\")\n",
+    "    inventory = {}\n",
+    "\n",
+    "    for i in products:\n",
+    "        valid_input = False\n",
+    "        while not valid_input:\n",
+    "            try : \n",
+    "                \n",
+    "                print(f\"Choose the quantity of {i}\")\n",
+    "                product = int(input(\"Enter the quantity :\"))\n",
+    "\n",
+    "                if product >= 0:\n",
+    "                    inventory[i] = product\n",
+    "                    valid_input = True\n",
+    "                else :\n",
+    "                    raise ValueError (\"Please enter a positif number\")\n",
+    "\n",
+    "            except ValueError as e:\n",
+    "                print (f\"Error : {e}\")\n",
+    "        \n",
+    "\n",
+    "    return inventory\n",
+    "\n",
+    "inventory = initialize_inventory(products)\n",
+    "\n",
+    "\n",
+    "def get_customer_orders():\n",
+    "    num = False\n",
+    "    while not num :\n",
+    "        \n",
+    "        try :\n",
+    "            number = int(input(\"Enter the number of customer_orders\"))\n",
+    "\n",
+    "            if number > 0 :\n",
+    "                num = True\n",
+    "            if number < 0:\n",
+    "                raise ValueError (\"Please enter a positif number\")\n",
+    "        \n",
+    "     \n",
+    "        except ValueError as e:\n",
+    "            print (f\"Error : {e}\")\n",
+    "\n",
+    "\n",
+    "        \n",
+    "    customer_orders = {}\n",
+    "\n",
+    "    for i in range (1, number + 1):\n",
+    "        product = False\n",
+    "        while not product :\n",
+    "            try :\n",
+    "                prod = str(input(f\"choose product {i} : \"))  \n",
+    "             \n",
+    "                if prod in inventory:\n",
+    "                    product = True\n",
+    "                    qty = False\n",
+    "                    while not qty :\n",
+    "                        try : \n",
+    "                            qté = int(input(\"choose a quantity : \"))\n",
+    "\n",
+    "                            if qté <= inventory[prod]:\n",
+    "                                qty = True\n",
+    "                            else:\n",
+    "                                raise ValueError (f\"You can't ask more than : {inventory[prod]}\")\n",
+    "                                \n",
+    "                        except ValueError as e:\n",
+    "                            print (f\"Error : {e}\")\n",
+    "                \n",
+    "                    customer_orders[prod] = qté\n",
+    "                    \n",
+    "                else:\n",
+    "                    raise ValueError (\"Product not found in the available products.\")\n",
+    "                    \n",
+    "            except ValueError as e:\n",
+    "                print(f\"Error : {e}\")\n",
+    "    \n",
+    "    return customer_orders\n",
+    "       \n",
+    "customer_orders = get_customer_orders()\n",
+    "print (customer_orders)\n",
+    "print (inventory)\n",
+    "       "
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 65,
+   "id": "b807e03c-98d4-42f0-bc63-b3768ce08699",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Nombre 1 :  m\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Error : invalid literal for int() with base 10: 'm'\n",
+      "Block executed\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Nombre 1 :  8\n",
+      "Nombre 2 : m\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Error : invalid literal for int() with base 10: 'm'\n",
+      "Block executed\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Nombre 1 :  8\n",
+      "Nombre 2 : 18\n",
+      "Operateur *\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The result = 144\n",
+      "Block executed\n"
+     ]
+    }
+   ],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "93be0af7-d714-4546-9e7e-f9cee7354126",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
@@ -66,7 +223,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.12.7"
   }
  },
  "nbformat": 4,