lab-python-error-handling

lab-python-error-handling-solution.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Lab | Error Handling - Solution"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Step 1: initialize_inventory with error handling (provided by lab)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
+    "\n",
+    "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": "markdown",
+   "metadata": {},
+   "source": [
+    "## Step 2: calculate_total_price with error handling"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def calculate_total_price(customer_orders):\n",
+    "    total_price = 0\n",
+    "    for product in customer_orders:\n",
+    "        valid_input = False\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",
+    "            except ValueError:\n",
+    "                print(\"Invalid input. Please enter a numeric price.\")\n",
+    "    return total_price"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Step 3: get_customer_orders with error handling"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def get_customer_orders(inventory):\n",
+    "    # Step 3a: Get valid number of orders\n",
+    "    valid_input = False\n",
+    "    while not valid_input:\n",
+    "        try:\n",
+    "            num_orders = int(input(\"Enter the number of customer orders: \"))\n",
+    "            if num_orders > 0:\n",
+    "                valid_input = True\n",
+    "            else:\n",
+    "                print(\"Number of orders must be greater than 0.\")\n",
+    "        except ValueError:\n",
+    "            print(\"Invalid input. Please enter a valid number.\")\n",
+    "\n",
+    "    # Step 3b: Get valid product names\n",
+    "    customer_orders = set()\n",
+    "    for _ in range(num_orders):\n",
+    "        valid_product = False\n",
+    "        while not valid_product:\n",
+    "            try:\n",
+    "                product = input(\"Enter the name of a product that a customer wants to order: \")\n",
+    "                if product not in inventory:\n",
+    "                    raise ValueError(f\"'{product}' is not in the inventory. Please enter a valid product name.\")\n",
+    "                if inventory[product] == 0:\n",
+    "                    raise ValueError(f\"'{product}' is out of stock. Please choose another product.\")\n",
+    "                customer_orders.add(product)\n",
+    "                valid_product = True\n",
+    "            except ValueError as e:\n",
+    "                print(f\"Error: {e}\")\n",
+    "\n",
+    "    return customer_orders"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Step 4: Run the full program to test"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Run the program\n",
+    "inventory = initialize_inventory(products)\n",
+    "customer_orders = get_customer_orders(inventory)\n",
+    "total_price = calculate_total_price(customer_orders)\n",
+    "\n",
+    "print(\"\\nCustomer Orders:\", customer_orders)\n",
+    "print(\"Total Price:\", total_price)"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "name": "python",
+   "version": "3.9.13"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}