diff --git a/lab-python-error-handling.ipynb b/lab-python-error-handling.ipynb index f4c6ef6..f58c908 100644 --- a/lab-python-error-handling.ipynb +++ b/lab-python-error-handling.ipynb @@ -72,11 +72,156 @@ "\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": 8, + "id": "a9d1631d", + "metadata": {}, + "outputs": [], + "source": [ + "# Step 1: Define the function for initializing the inventory with error handling\n", + "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n", + "\n", + "def initialize_inventory(products):\n", + " inventory = {}\n", + " for product in products:\n", + " valid_quantity = False\n", + " while not valid_quantity:\n", + " try:\n", + " quantity = int(input(f\"Enter the quantity of {product}s available: \"))\n", + " if quantity < 0:\n", + " raise ValueError(\"Invalid quantity! Please enter a non-negative value.\")\n", + " valid_quantity = True\n", + " except ValueError as error:\n", + " print(f\"Error: {error}\")\n", + " inventory[product] = quantity\n", + " return inventory" + ] + }, + { + "cell_type": "code", + "execution_count": 10, + "id": "37e51b90", + "metadata": {}, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "\n", + "Total customer orders 2:\n", + "hat\n", + "mug\n" + ] + } + ], + "source": [ + "# Modify the `get_customer_orders` function to include error handling.\n", + " #- If the user enters an invalid number of orders (e.g., a negative value or a non-numeric value), display an error message and ask them to re-enter the number of orders.\n", + " #- If the user enters an invalid product name (e.g., a product name that is not in the inventory), or that doesn't have stock available, display an error message and ask them to re-enter the product name. *Hint: you will need to pass inventory as a parameter*\n", + " #- Use a try-except block to handle the error and continue prompting the user until a valid product name is entered.\n", + "\n", + "def get_customer_orders():\n", + "\n", + " number_of_orders = int(input(\"please enter the number of customer orders:\")) \n", + " \n", + " customer_orders = set()\n", + " for i in range(number_of_orders):\n", + " valid_product = False\n", + " \n", + " while not valid_product:\n", + " try:\n", + " product_name = input(f\"Enter product name for order {i + 1}: \") \n", + " if product_name not in products:\n", + " raise ValueError(\"invalid product name, please enter the correct product name\")\n", + " valid_product = True\n", + " customer_orders.add(product_name)\n", + " except ValueError as error:\n", + " print(f\"Error: {error}\")\n", + "\n", + " return customer_orders, number_of_orders\n", + "\n", + "\n", + "customer_orders, number_of_orders = get_customer_orders()\n", + "\n", + "print(f\"\\nTotal customer orders {number_of_orders}:\")\n", + "for order in customer_orders:\n", + " print(order)\n", + "\n", + "#print(f\"\\nTotal customer orders {number_of_orders}:\")\n", + "#" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "id": "af9e8c0a", + "metadata": {}, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The price for hat is: 13.50Euro\n", + "The price for mug is: 16.50Euro\n", + "\n", + "The total price of the customers order is: 30.00 Euro\n" + ] + } + ], + "source": [ + "#2. Modify the `calculate_total_price` function to include error handling.\n", + " # If the user enters an invalid price (e.g., a negative value or a non-numeric value), display an error message and ask them to re-enter the price for that product.\n", + " # Use a try-except block to handle the error and continue prompting the user until a valid price is entered.\n", + "#define prices_per_product\n", + "def price_per_product(customer_orders):\n", + " product_prices = {}\n", + " #{product: float(input(f\"Please enter the price of {product}: \")) for product in customer_orders}\n", + " for product in customer_orders:\n", + " valid_price = False\n", + " while not valid_price:\n", + " try:\n", + " price = float(input(f\"Please enter the price of {product}: \"))\n", + " \n", + " if price < 0:\n", + " raise ValueError(f\"Invalid price! Please enter the correct price for {product}\")\n", + " valid_price = True\n", + " product_prices[product] = price\n", + "\n", + " except ValueError as error:\n", + " print(error)\n", + " \n", + " return product_prices\n", + "\n", + "#calculate total price\n", + "def total_price(customer_orders):\n", + " return sum(prices.values())\n", + "\n", + "\n", + "prices = price_per_product(customer_orders)\n", + "total = total_price(prices)\n", + " \n", + " \n", + "#print prices\n", + "for product, price in prices.items():\n", + " print(f\"The price for {product} is: {price:.2f}Euro\")\n", + "#Print the total price of the customer order.\n", + "print(f\"\\nThe total price of the customers order is: {total:.2f} Euro\")" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "id": "7dad61d8", + "metadata": {}, + "outputs": [], + "source": [] } ], "metadata": { "kernelspec": { - "display_name": "Python 3 (ipykernel)", + "display_name": "Python 3", "language": "python", "name": "python3" }, @@ -90,7 +235,7 @@ "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", - "version": "3.9.13" + "version": "3.14.2" } }, "nbformat": 4,