From 6ebe2a43be4107261bcedc8d10f651fcc0fd44d5 Mon Sep 17 00:00:00 2001
From: nadiyashahaibi-DA <nadiya.shahaibi@gmail.com>
Date: Mon, 27 Jul 2026 18:58:50 +0100
Subject: [PATCH] Completed lab

---
 lab-python-error-handling.ipynb | 151 +++++++++++++++++++++++++++++++-
 1 file changed, 150 insertions(+), 1 deletion(-)

diff --git a/lab-python-error-handling.ipynb b/lab-python-error-handling.ipynb
index f4c6ef6..c2dffee 100644
--- a/lab-python-error-handling.ipynb
+++ b/lab-python-error-handling.ipynb
@@ -72,6 +72,155 @@
     "\n",
     "4. Test your code by running the program and deliberately entering invalid quantities and product names. Make sure the error handling mechanism works as expected.\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "bf8b5a1b-f8fe-4884-8459-304d3c92fa23",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def initialize_inventory(products):\n",
+    "    inventory = {}\n",
+    "    for product in products:\n",
+    "        valid_input = False\n",
+    "        while not valid_input:\n",
+    "            try:\n",
+    "                quantity = int(input(f\"Enter the quantity of {product}s available: \"))\n",
+    "                if quantity >= 0:\n",
+    "                    inventory[product] = quantity\n",
+    "                    valid_input = True\n",
+    "                else:\n",
+    "                    print(\"Quantity cannot be negative. Please enter a valid quantity.\")\n",
+    "            except ValueError:\n",
+    "                print(\"Invalid input. Please enter a valid quantity.\")\n",
+    "    return inventory"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "0fd055ac-4edf-4107-93d1-4d672c4b5c73",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "b31d543a-7fa9-4058-a73f-3f3385133d83",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def calculate_total_price(customer_products):\n",
+    "    total_price = 0\n",
+    "\n",
+    "    for product in customer_orders:\n",
+    "        valid_input = False\n",
+    "\n",
+    "        while not valid_input:\n",
+    "            try:\n",
+    "                price = float(input(f\"Enter the price of {product}: \"))\n",
+    "                if price >= 0:\n",
+    "                    total_price += price\n",
+    "                    valid_input = True\n",
+    "                else:\n",
+    "                    print(\"Price cannot be negative. Please enter a valid price.\")\n",
+    "            \n",
+    "            except ValueError:\n",
+    "                print(\"Invalid input. Please enter a numeric price.\")\n",
+    "\n",
+    "    return total_price"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "1164004c-a3a4-4710-961c-ff4b84769873",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "1a61dc37-649b-44f4-ac6f-9cd4911ee8ba",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def get_customer_orders(inventory):\n",
+    "\n",
+    "   while True:\n",
+    "        try:\n",
+    "            number_of_orders = int(input(\"Enter the number of customer order: \"))\n",
+    "\n",
+    "            if number_of_orders < 0:\n",
+    "                print(\"Error: number of orders cannot be negative. Please try again.\")\n",
+    "            break\n",
+    "\n",
+    "        except ValueError:\n",
+    "            print(\"Invalid input. Please enter a whole number. \")\n",
+    "\n",
+    "        customer_orders = []\n",
+    "       \n",
+    "        for i in range(number_of_orders):\n",
+    "            valid_product = False\n",
+    "\n",
+    "            while not valid_product:\n",
+    "                product_name = input(\"Enter the product name to order: \").lower()\n",
+    "\n",
+    "                if product_name in inventory and inventory [product_name] > 0:\n",
+    "                    customer_orders.append(product_name)\n",
+    "                    valid_product = True\n",
+    "                elif product_name not in inventory:\n",
+    "                    print(\"That product is not is inventory. Please enter a valid product name. \")\n",
+    "                else:\n",
+    "                    print(\"That product is out of stock. Please choose another product.\")\n",
+    "        \n",
+    "        return customer_orders"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "0264d0c2-113b-41ea-87d0-0cfb027349ad",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "8f2a39d9-495f-4528-ae77-daeeb83e47dc",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "if __name__ == \"__main__\":\n",
+    "    products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
+    "\n",
+    "    product_prices = {\n",
+    "        \"t-shirt\": 15,\n",
+    "        \"mug\": 8,\n",
+    "        \"hat\": 12,\n",
+    "        \"book\" : 20,\n",
+    "        \"keychain\": 5\n",
+    "    }\n",
+    "\n",
+    "    print(\"initialize Inventory\")\n",
+    "    inventory = initialize_inventory(products)\n",
+    "\n",
+    "    print(\"Get Customer Orders\")\n",
+    "    customer_orders = get_customer_orders(inventory)\n",
+    "\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "868a795e-39e2-4766-82af-673fdcfc3642",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
@@ -90,7 +239,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.14.6"
   }
  },
  "nbformat": 4,