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Lab 5, attempt 1 #659

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198 changes: 195 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 +72,205 @@
"\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": "9ff88855-b8b6-46e7-972a-856507e94e13",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirts available: 5\n",
"Enter the quantity of mugs available: 5\n",
"Enter the quantity of hats available: 5\n",
"Enter the quantity of books available: 5\n",
"Enter the quantity of keychains available: 5\n"
]
},
{
"data": {
"text/plain": [
"{'t-shirt': 5, 'mug': 5, 'hat': 5, 'book': 5, 'keychain': 5}"
]
},
"execution_count": 1,
"metadata": {},
"output_type": "execute_result"
}
],
"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\n",
"\n",
"initialize_inventory(products)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "18bccc5d-b48a-4e79-b15d-bc47d14d7474",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the number of customer orders: r\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. Please enter a valid number.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the number of customer orders: -1\n"
]
}
],
"source": [
"def get_customer_orders():\n",
" while True:\n",
" try:\n",
" customer_order_no = int(input(\"Enter the number of customer orders: \"))\n",
"\n",
" if customer_order_no >= 0: \n",
" list_of_items = [(input(f\"Enter the name of a product that a customer wants to order: \")) for i in range(customer_order_no)]\n",
" return list_of_items\n",
" \n",
" elif customer_order_no < 0:\n",
" pass\n",
" \n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a valid number.\")\n",
" \n",
" \n",
"\n",
"list_of_items = get_customer_orders()"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "7800e76a-f74a-475f-a608-c8d3276d1212",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"['mug', 'book']"
]
},
"execution_count": 3,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"list_of_items"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "646405ba-6afa-4893-90d0-f040cb494b41",
"metadata": {},
"outputs": [],
"source": [
"def get_customer_orders():\n",
" while True:\n",
" try:\n",
" customer_order_no = int(input(\"Enter the number of customer orders: \"))\n",
"\n",
" if customer_order_no >= 0:\n",
" list_of_items = [\n",
" input(\"Enter the name of a product that a customer wants to order: \")\n",
" for i in range(customer_order_no)\n",
" ]\n",
" return list_of_items\n",
"\n",
" else:\n",
" print(\"Number of orders cannot be negative.\")\n",
"\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a valid number.\")\n",
"\n",
"list_of_items = get_customer_orders()"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "73786c2d-ccc4-409a-ac4d-e0c79bc9b869",
"metadata": {},
"outputs": [],
"source": [
"def total_price(list_of_items):\n",
" total = 0\n",
" for item in list_of_items:\n",
" while True:\n",
" try:\n",
" price = int(input(f\"Enter the price for the {item}: \"))\n",
" \n",
" if price >= 0:\n",
" total += price\n",
" break # You need this to move on to the next item\n",
" else:\n",
" print(\"Price cannot be negative. Please enter a valid price.\")\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a valid number.\")\n",
" \n",
" print(\"The total price is \", total)\n",
" return total\n",
"\n",
"total_price(list_of_items)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "ebc64977-09c1-4712-89fd-02ec599890ee",
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"id": "bb189163-c18a-4fb5-bfeb-14d2aee3dcb3",
"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 +282,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.13.9"
}
},
"nbformat": 4,
Expand Down