From 696178b82545f2b97f06066468614eb1d2d10723 Mon Sep 17 00:00:00 2001
From: Mandana Soltani <mandanasoltanig@gmail.com>
Date: Tue, 24 Mar 2026 13:09:30 +0100
Subject: [PATCH] Add error handling updates to lab notebook

---
 lab-python-error-handling.ipynb | 92 ++++++++++++++++++++++++++++++++-
 1 file changed, 91 insertions(+), 1 deletion(-)

diff --git a/lab-python-error-handling.ipynb b/lab-python-error-handling.ipynb
index f4c6ef6..fe74e85 100644
--- a/lab-python-error-handling.ipynb
+++ b/lab-python-error-handling.ipynb
@@ -72,6 +72,96 @@
     "\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": 16,
+   "id": "29ea4792-f07a-4c60-ab56-73ada714453d",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def calculate_total_price(products):\n",
+    "    prices = {}\n",
+    "    for product in products:\n",
+    "        valid_input = False\n",
+    "        while not valid_input:\n",
+    "           try:\n",
+    "            price = float(input(f\"Enter the price for {product}: \"))\n",
+    "            if price > 0:\n",
+    "                prices[product] = price \n",
+    "                valid_input - True\n",
+    "            else:\n",
+    "                print(\"Price cant be negative. Please enter a valid number.\")\n",
+    "           except ValueEror:\n",
+    "              print(\"Invalid input. Please enter a numeric price.\")\n",
+    "    return prices \n",
+    "\n",
+    "   \n",
+    "                                 \n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 84,
+   "id": "2abfdb53-992c-41bd-b945-bcfd00a5a90e",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def get_customers_orders(inventory):\n",
+    "    orders = {}\n",
+    "\n",
+    "    valid_number = False\n",
+    "    while not valid_number:\n",
+    "        try:\n",
+    "            num_orders = int(input(\"How many different products would you like to order?\"))\n",
+    "            if num_orders >= 0:\n",
+    "                valid_number = True\n",
+    "            else:\n",
+    "                print(\"Number of orders can not be nagative. Please enter a valid number.\")\n",
+    "        except ValueError:\n",
+    "            print(\"Invalid Input. Please enter a numeric value. \")\n",
+    "    \n",
+    "    \n",
+    "    for _ in range(num_orders):\n",
+    "        valid_product = False\n",
+    "        while not valid_product:\n",
+    "            product = input(\"Enter the product name: \")\n",
+    "\n",
+    "            if product not in inventory:\n",
+    "                print(\"Invalid product name. Please enter a product from the inventory.\")\n",
+    "            elif inventory[product] == 0:\n",
+    "                print(f\"Sorry, {product} is out of stock.\")\n",
+    "            else:\n",
+    "                valid_product = True\n",
+    "                \n",
+    "            if valid_product: \n",
+    "                valid_quantity = False\n",
+    "                while not valid_quantity:\n",
+    "                    try:\n",
+    "                        \n",
+    "                        quantity = int(input(f\"How many {product} would you like to order?\"))\n",
+    "                        if quantity < 0:\n",
+    "                            print(\"Quantity must be positive.\")\n",
+    "                    \n",
+    "                        elif quantity > inventory[product]:\n",
+    "                            print(\"Not enough stock available. Please enter a smaller number\")\n",
+    "                        else:\n",
+    "                            valid_quantity = True \n",
+    "                            orders[product] = quantity\n",
+    "                    \n",
+    "                    except ValueError:\n",
+    "                        print(\"Invalid input. Please enter a numeric quantity.\")\n",
+    "    \n",
+    "    return orders         "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "84251d0e-b495-4726-8fa9-433dec89cd4c",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
@@ -90,7 +180,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.5"
   }
  },
  "nbformat": 4,