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test error handling #630

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58a7d2f
test error handling
Albertovmt Apr 16, 2026
446353b
improve test
Albertovmt Apr 16, 2026
76f54af
test
Albertovmt Apr 16, 2026
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update changes
Albertovmt Apr 17, 2026
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173 changes: 171 additions & 2 deletions lab-python-error-handling.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -72,11 +72,180 @@
"\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": null,
"id": "2ce25673",
"metadata": {},
"outputs": [],
"source": [
"def manage_orders():\n",
" def initialize_inventory(products):\n",
" inventory = {}\n",
" products = [item.lower().strip() for item in products]\n",
" for product in products:\n",
" while True:\n",
" try:\n",
" quantity = int(input(f\"Enter quantity of {product}: \").strip())\n",
" if quantity >= 0:\n",
" inventory[product] = quantity\n",
" break\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",
" \n",
" return inventory\n",
"\n",
" def get_customer_orders(inventory):\n",
" customer_orders = set()\n",
"\n",
" while True:\n",
" try:\n",
" order = input('Enter the name of the product to purchase: ').strip().lower()\n",
"\n",
" if order not in inventory:\n",
" raise KeyError\n",
" if inventory[order] <= 0:\n",
" raise ValueError\n",
" \n",
" customer_orders.add(order)\n",
" inventory[order] -= 1\n",
" except KeyError:\n",
" print(f'Product {order} not found')\n",
" except ValueError:\n",
" print(f'Sorry, {order} is out of stock')\n",
" \n",
" validation = input(\"Do you want to buy more items? (yes/no): \").strip().lower()\n",
" while validation not in ('yes','no'):\n",
" print(f\"'{validation}' is not a correct option. Please select 'yes' or 'no'.\", \"\\n\")\n",
" validation = input(\"Do you want to buy more items? (yes/no): \").strip().lower() \n",
"\n",
" if validation == \"no\":\n",
" break \n",
"\n",
" print(\"------Customer´s order------\")\n",
" print (f\"The customer has ordered {customer_orders}\", \"\\n\")\n",
"\n",
" return customer_orders\n",
" \n",
" def calculate_order_statistics(customer_orders,products):\n",
"\n",
" total_products_ordered = len(customer_orders)\n",
" percentage_ordered = round((total_products_ordered/len(products))*100,1)\n",
"\n",
" return total_products_ordered, percentage_ordered\n",
"\n",
" def print_order_statistics(order_statistics):\n",
"\n",
" total_products_ordered, percentage_of_products_ordered = order_statistics\n",
" print(\"------Order Statistics------\")\n",
" print(f\"Total products ordered: {total_products_ordered}\")\n",
" print(f\"Percentage of products ordered: {percentage_of_products_ordered}%\",\"\\n\")\n",
"\n",
" def print_updated_inventory(inventory):\n",
" print(\"------Updated inventory------\")\n",
" for key,value in inventory.items():\n",
" print(f\"{key}: {value}\")\n",
" print()\n",
"\n",
" def calculate_total_price(customer_orders):\n",
"\n",
" prices_list = []\n",
" for product in customer_orders:\n",
"\n",
" while True:\n",
" try:\n",
" user_input = float(input(f'Enter the price of one {product}').replace(',','.'))\n",
" if user_input >= 0:\n",
" prices_list.append(user_input)\n",
" break\n",
" else:\n",
" print('Price cannot be negative. Please enter a valid price')\n",
" except ValueError:\n",
" print('Invalid input. Price has be a number.')\n",
"\n",
" print('------Receipt------')\n",
" for price,item in zip(prices_list,list(customer_orders)):\n",
" print(f'The price of one {item} is: {price}$ ') \n",
"\n",
" sum_prices = round(sum(prices_list),1)\n",
" \n",
" return sum_prices\n",
"\n",
" products = [\"T-shirt\", \"MUg\", \"hat\", \"bOok\", \"keychain\"]\n",
"\n",
" inventory = initialize_inventory(products) \n",
" print(\"------Availability of products------\")\n",
" for item,value in inventory.items():\n",
" print(item,\":\",value) \n",
" customer_orders = get_customer_orders(inventory)\n",
" order_statistics = calculate_order_statistics(customer_orders,products)\n",
" print_order_statistics(order_statistics)\n",
" print_updated_inventory(inventory)\n",
" total = calculate_total_price(customer_orders)\n",
" print(f'the total price is: {total}$')"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "d492c33d",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"------Availability of products------\n",
"t-shirt : 1\n",
"mug : 1\n",
"hat : 1\n",
"book : 1\n",
"keychain : 1\n",
"Product mu not found\n",
"Sorry, mug is out of stock\n",
"'45' is not a correct option. Please select 'yes' or 'no'. \n",
"\n",
"------Customer´s order------\n",
"The customer has ordered {'mug'} \n",
"\n",
"------Order Statistics------\n",
"Total products ordered: 1\n",
"Percentage of products ordered: 20.0% \n",
"\n",
"------Updated inventory------\n",
"t-shirt: 1\n",
"mug: 0\n",
"hat: 1\n",
"book: 1\n",
"keychain: 1\n",
"\n",
"Invalid input. Price must be a number.\n",
"Price cannot be negative. Please enter a valid price\n",
"------Receipt------\n",
"The price of one mug is: 34.5$ \n",
"the total price is: 34.5$\n"
]
}
],
"source": [
"manage_orders()"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "2fa4bb28",
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +259,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.14.4"
}
},
"nbformat": 4,
Expand Down