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306 changes: 305 additions & 1 deletion lab-python-error-handling.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,310 @@
"\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": 11,
"id": "5cca2ecb-57bd-43bb-b0cd-3f0f2f02f897",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirts available: t\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. Please enter an integer.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirts available: we\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. Please enter an integer.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirts available: 3\n",
"Enter the quantity of mugs available: 5\n",
"Enter the quantity of hats available: six\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. Please enter an integer.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of hats available: 6\n",
"Enter the quantity of books available: 5\n",
"Enter the quantity of keychains available: 0\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Quantity of products must be greater than 0.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of keychains available: 1\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Initial inventory: {'t-shirt': 3, 'mug': 5, 'hat': 6, 'book': 5, 'keychain': 1}\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the number of products you want to order: cinco\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. Please enter the amount in the form of a whole number.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the number of products you want to order: 2.0\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. Please enter the amount in the form of a whole number.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the number of products you want to order: 2\n",
"Enter the name of the product you want to order: mUg\n",
"Enter the name of the product you want to order: h1t\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Please enter a valid product with stock available:dict_items([('t-shirt', 3), ('mug', 5), ('hat', 6), ('book', 5), ('keychain', 1)])\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of the product you want to order: mug\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"You already added this product to your order.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of the product you want to order: hat\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Customer order: ['mug', 'hat']\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the price of this product mug: three\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. Please enter a number and use '.' for decimals.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the price of this product mug: 5\n",
"Enter the price of this product hat: 6,7\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. Please enter a number and use '.' for decimals.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the price of this product hat: 6.7\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Total price of the order: 11.7\n",
"Updated inventory:\n",
"t-shirt: 3\n",
"mug: 4\n",
"hat: 5\n",
"book: 5\n",
"keychain: 1\n"
]
},
{
"data": {
"text/plain": [
"[None, None, None, None, None]"
]
},
"execution_count": 11,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"products=['t-shirt','mug','hat','book','keychain']\n",
"\n",
"def initialize_inventory(products):\n",
" up_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: \").strip())\n",
" if quantity <= 0:\n",
" print(\"Quantity of products must be greater than 0.\")\n",
" else:\n",
" up_inventory[product] = quantity\n",
" valid_input = True\n",
" except:\n",
" print(\"Invalid input. Please enter an integer.\")\n",
" return up_inventory\n",
"\n",
"def get_customer_order(inventory):\n",
" valid_number_prod=False\n",
" while not valid_number_prod:\n",
" try:\n",
" number_of_prod=int(input('Enter the number of products you want to order:').strip())\n",
" if number_of_prod<=0:\n",
" print('To place an order please introduce a number of products greater than 0.')\n",
" else:\n",
" valid_number_prod=True\n",
" except:\n",
" print(\"Invalid input. Please enter the amount in the form of a whole number.\")\n",
" customer_order=[]\n",
" for order in range(number_of_prod):\n",
" valid_order=False\n",
" while not valid_order:\n",
" try:\n",
" product=str(input('Enter the name of the product you want to order: ').strip()).lower()\n",
" if product not in inventory or inventory[product]<=0:\n",
" print(f'Please enter a valid product with stock available:{inventory.items()}')\n",
" elif product in customer_order:\n",
" print('You already added this product to your order.')\n",
" else:\n",
" customer_order.append(product)\n",
" valid_order=True\n",
" except:\n",
" print(\"Invalid input. Please enter the name of a product.\") \n",
" return customer_order\n",
"\n",
"def calculate_price(customer_order):\n",
" prices=[]\n",
" for product in customer_order:\n",
" valid_prices=False\n",
" while not valid_prices:\n",
" try:\n",
" price=float(input(f'Enter the price of this product {product}:').strip())\n",
" if price <= 0:\n",
" print(\"The price of the product must be greater than 0.\")\n",
" else:\n",
" prices.append(price)\n",
" valid_prices = True\n",
" except:\n",
" print(\"Invalid input. Please enter a number and use '.' for decimals.\")\n",
" total_price = sum(prices)\n",
" return total_price \n",
"\n",
"def calculate_order_statistics(customer_order, products):\n",
" total = len(customer_order)\n",
" percentage = (total / len(products)) * 100\n",
" print(\"Order Statistics:\")\n",
" print(f\"Total Products Ordered: {total}\")\n",
" print(f\"Percentage of Unique Products Ordered: {percentage}\")\n",
" return total, percentage\n",
"\n",
"def update_inventory(customer_order, inventory):\n",
" updated_inventory={product:(value-1 if product in customer_order else value) for product, value in inventory.items() \n",
" if (value - 1 if product in customer_order else value) > 0}\n",
" return updated_inventory\n",
"\n",
"def print_updated_inventory(inventory):\n",
" print(\"Updated inventory:\")\n",
" final_inventory=[ print(f\"{product}: {quantity}\") for product, quantity in inventory.items()]\n",
" return final_inventory\n",
"\n",
"inventory = initialize_inventory(products)\n",
"print(f'Initial inventory: {inventory}')\n",
"customer_order =get_customer_order(inventory)\n",
"print(f'Customer order: {customer_order}')\n",
"total_price = calculate_price(customer_order)\n",
"print(f'Total price of the order: {total_price}')\n",
"inventory = update_inventory(customer_order, inventory)\n",
"print_updated_inventory(inventory)\n"
]
}
],
"metadata": {
Expand All @@ -90,7 +394,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.14.4"
}
},
"nbformat": 4,
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