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lab-python-error-handling #428

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c114e1a
Solved Lab
Jessica-Bu Jun 20, 2025
79bfffe
Solved Lab
Jessica-Bu Jun 22, 2025
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190 changes: 187 additions & 3 deletions lab-python-error-handling.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -72,13 +72,197 @@
"\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": 1,
"id": "e4b708ac-1936-4982-818b-6e7e5a5cda8d",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please enter stock for article t-shirt 1\n",
"Please enter stock for article mug 2\n",
"Please enter stock for article hat 3\n",
"Please enter stock for article book 4\n",
"Please enter stock for article keychain 5\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'t-shirt': 1, 'mug': 2, 'hat': 3, 'book': 4, 'keychain': 5}\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please enter the number of products you would like to order. 2\n",
"Please enter the name of the product you would like to order. k\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. Please enter a valid product name.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please enter the name of the product you would like to order. T-Shirt\n",
"Please enter the name of the product you would like to order. book\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'book', 't-shirt'}\n",
"Order Statistics:\n",
" Total Products Ordered: 2\n",
" Percentage of Products Ordered: 40.0 %\n",
"['The stock for mug is 2', 'The stock for hat is 3', 'The stock for book is 3', 'The stock for keychain is 5']\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please enter the price of product book: 10\n",
"Please enter the price of product t-shirt: 10\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"The total price of your order is: 20.0 EUR.\n"
]
}
],
"source": [
"def initialize_inventory(products):\n",
" \"\"\"Initializing a dictionary for inventory input\"\"\"\n",
" inventory = {}\n",
" for product in products:\n",
" valid_input = False\n",
" while not valid_input:\n",
" try:\n",
" stock = int(input(f\"Please enter stock for article {product}\"))\n",
" if stock >= 0:\n",
" inventory[product] = stock\n",
" valid_input = True\n",
" else:\n",
" print(\"Invalid input. Please enter a valid quantity.\")\n",
" except:\n",
" print(\"Invalid input. Please enter a valid quantity.\")\n",
" return inventory\n",
"\n",
"def get_customer_orders(inventory):\n",
" \"\"\"Creates Set for customer order input\"\"\"\n",
" valid_input = False\n",
" while not valid_input:\n",
" try:\n",
" amount_products = int(input(\"Please enter the number of products you would like to order.\"))\n",
" if amount_products >= 0 and amount_products <=5:\n",
" valid_input = True\n",
" else:\n",
" print(\"Invalid input. Please enter a number between 1 and 5.\")\n",
" except:\n",
" print(\"Invalid input. Please enter a positive number.\")\n",
" customer_orders = set()\n",
" for amount in range(amount_products):\n",
" valid_input = False\n",
" while not valid_input:\n",
" try:\n",
" articles_ordered = input(\"Please enter the name of the product you would like to order.\").lower()\n",
" if articles_ordered in inventory and inventory[articles_ordered] > 0:\n",
" customer_orders.add(articles_ordered)\n",
" valid_input = True\n",
" else:\n",
" print(\"Invalid input. Please enter a valid product name.\")\n",
" except: \n",
" print(\"Invalid input. Please enter a valid product name.\")\n",
" return customer_orders\n",
"\n",
"def update_inventory(customer_orders, inventory):\n",
" inventory = {product: (stock - 1 if product in customer_orders else inventory[product]) for product, stock in inventory.items()}\n",
" inventory = {product: stock for product, stock in inventory.items() if stock > 0}\n",
" return inventory\n",
"\n",
"def calculate_order_statistics(customer_orders, products):\n",
" total_products_ordered = len(customer_orders)\n",
" percentage_ordered = (len(customer_orders)/len(products))*100\n",
" return(total_products_ordered, percentage_ordered)\n",
"\n",
"def print_order_statistics(order_statistics):\n",
" print(f\"\"\"Order Statistics:\n",
" Total Products Ordered: {order_statistics[0]}\n",
" Percentage of Products Ordered: {order_statistics[1]} %\"\"\")\n",
"\n",
"def print_updated_inventory(inventory):\n",
" updated_inventory = [f\"The stock for {product} is {inventory[product]}\" for product in inventory]\n",
" print(updated_inventory)\n",
"\n",
"def calculate_total_price(customer_orders):\n",
" \"\"\"Calculates total price of customer orders\"\"\"\n",
" total_price = []\n",
" for product in customer_orders:\n",
" valid_input = False\n",
" while not valid_input:\n",
" try:\n",
" price = float(input(f\"Please enter the price of product {product}: \"))\n",
" if price >= 0:\n",
" total_price.append(price)\n",
" valid_input = True\n",
" else:\n",
" print(\"Please enter a valid price.\")\n",
" except ValueError:\n",
" print(\"Please enter a valid price.\")\n",
" total_price = sum(total_price)\n",
" return total_price\n",
"\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"inventory = initialize_inventory(products)\n",
"print(inventory)\n",
"\n",
"customer_orders = get_customer_orders(inventory)\n",
"print(customer_orders)\n",
"\n",
"order_statistics = calculate_order_statistics(customer_orders, products)\n",
"\n",
"print_order_statistics(order_statistics)\n",
"\n",
"inventory = update_inventory(customer_orders, inventory)\n",
"\n",
"print_updated_inventory(inventory)\n",
"\n",
"total_price = calculate_total_price(customer_orders)\n",
"print(f\"The total price of your order is: {total_price} EUR.\")\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "95aac34b-3feb-4d08-80e7-eaeaddcb43d7",
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "Python [conda env:base] *",
"language": "python",
"name": "python3"
"name": "conda-base-py"
},
"language_info": {
"codemirror_mode": {
Expand All @@ -90,7 +274,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.12.7"
}
},
"nbformat": 4,
Expand Down