lab done

lab_flow_control_end.ipynb

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+{
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+  {
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+   "id": "d3bfc191-8885-42ee-b0a0-bbab867c6f9f",
+   "metadata": {
+    "tags": []
+   },
+   "source": [
+    "# Lab | Flow Control"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "3851fcd1-cf98-4653-9c89-e003b7ec9400",
+   "metadata": {},
+   "source": [
+    "## Exercise: Managing Customer Orders Optimized\n",
+    "\n",
+    "In the last lab, you were starting an online store that sells various products. To ensure smooth operations, you developed a program that manages customer orders and inventory.\n",
+    "\n",
+    "You did so without using flow control. Let's go a step further and improve this code.\n",
+    "\n",
+    "Follow the steps below to complete the exercise:\n",
+    "\n",
+    "1. Look at your code from the lab data structures, and improve repeated code with loops.\n",
+    "\n",
+    "2. Instead of asking the user to input the name of three products that a customer wants to order, do the following:\n",
+    "    \n",
+    "    a. Prompt the user to enter the name of a product that a customer wants to order.\n",
+    "    \n",
+    "    b. Add the product name to the \"customer_orders\" set.\n",
+    "    \n",
+    "    c. Ask the user if they want to add another product (yes/no).\n",
+    "    \n",
+    "    d. Continue the loop until the user does not want to add another product.\n",
+    "\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": "ec6628d2",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'t-shirt': 2, 'mug': 3, 'hat': 4, 'book': 5, 'keychain': 6}\n"
+     ]
+    }
+   ],
+   "source": [
+    "#1\n",
+    "\n",
+    "products = ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n",
+    "inventory = {}\n",
+    "\n",
+    "for product in products:\n",
+    "    while True:\n",
+    "        product_qt = int(input(f'Enter product quantity for {product}:'))\n",
+    "        if product_qt >= 0:\n",
+    "            inventory[product] = product_qt\n",
+    "            break\n",
+    "        else:\n",
+    "            print('quantity must be positive number')\n",
+    "\n",
+    "print(inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "id": "e5bf4ab3",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "hat added to customer orders\n",
+      "mug added to customer orders\n",
+      "book added to customer orders\n",
+      "{'mug', 'hat', 'book'}\n"
+     ]
+    }
+   ],
+   "source": [
+    "#2\n",
+    "\n",
+    "customer_orders = set()\n",
+    "\n",
+    "\n",
+    "while True:\n",
+    "    order_item = input('Enter product name to order: ').strip()\n",
+    "    if order_item in products:\n",
+    "        customer_orders.add(order_item)\n",
+    "        print(f'{order_item} added to customer orders')\n",
+    "        while True:\n",
+    "            add_order = input('Order another product? (yes/no):').strip()\n",
+    "            if add_order in ['yes', 'no']:\n",
+    "                break\n",
+    "            else:\n",
+    "                print('Invalid input. Enter \"yes\" or \"no\".')\n",
+    "        if add_order == 'no':\n",
+    "            break\n",
+    "    \n",
+    "\n",
+    "print(customer_orders)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "id": "97014595",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Decremented mug. New quantity: 2\n",
+      "Decremented hat. New quantity: 3\n",
+      "Decremented book. New quantity: 4\n",
+      "{'t-shirt': 2, 'mug': 2, 'hat': 3, 'book': 4, 'keychain': 6}\n"
+     ]
+    }
+   ],
+   "source": [
+    "#3\n",
+    "\n",
+    "for order_item in customer_orders:\n",
+    "        if order_item in inventory:\n",
+    "            if inventory[order_item] > 0:\n",
+    "                inventory[order_item] -= 1\n",
+    "                print(f\"{order_item}. New quantity: {inventory[order_item]}\")\n",
+    "            else:\n",
+    "                print(f\"'{order_item}' is out of stock.\")\n",
+    "        else:\n",
+    "            print(f\"'{order_item}' not found in inventory.\")\n",
+    "\n",
+    "\n",
+    "print(inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "4c16c9a5",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
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