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Update lab-python-error-handling.ipynb #563

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201 changes: 199 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 +72,208 @@
"\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": 194,
"id": "0d6a6b6b",
"metadata": {},
"outputs": [],
"source": [
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]"
]
},
{
"cell_type": "code",
"execution_count": 195,
"id": "d3e656b0",
"metadata": {},
"outputs": [],
"source": [
"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": 212,
"id": "524380d3",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"{'t-shirt': 12, 'mug': 123, 'hat': 11, 'book': 22, 'keychain': 1}"
]
},
"execution_count": 212,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"initialize_inventory(products)"
]
},
{
"cell_type": "code",
"execution_count": 213,
"id": "8e66a6b8",
"metadata": {},
"outputs": [],
"source": [
"def get_customer_orders(inventory):\n",
" while True:\n",
" try:\n",
" order_count = int(input(\"How many products do you want? \"))\n",
" if order_count < 0:\n",
" print(\"Please enter a positive number.\")\n",
" continue\n",
" break\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a numeric value for the quantity.\")\n",
"\n",
" customer_orders = set()\n",
"\n",
" for i in range(order_count):\n",
" while True:\n",
" product_name = input(f\"Enter the name of product please: \")\n",
" \n",
" if product_name not in inventory:\n",
" print(f\"Sorry, '{product_name}' is not in our inventory. Try again.\")\n",
" elif inventory[product_name] <= 0:\n",
" print(f\"Sorry, '{product_name}' is out of stock. Please choose another.\")\n",
" else:\n",
" customer_orders.add(product_name)\n",
" break\n",
" \n",
" return customer_orders"
]
},
{
"cell_type": "code",
"execution_count": 214,
"id": "23a07f1b",
"metadata": {},
"outputs": [],
"source": [
"inventory = {'t-shirt': 12, 'mug': 123, 'hat': 11, 'book': 22, 'keychain': 1}"
]
},
{
"cell_type": "code",
"execution_count": 215,
"id": "96d3df6b",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Please enter a positive number.\n",
"Invalid input. Please enter a numeric value for the quantity.\n",
"Invalid input. Please enter a numeric value for the quantity.\n",
"Sorry, 'hats' is not in our inventory. Try again.\n",
"Sorry, '2' is not in our inventory. Try again.\n"
]
},
{
"data": {
"text/plain": [
"{'book', 'hat', 'mug'}"
]
},
"execution_count": 215,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"get_customer_orders(inventory)\n"
]
},
{
"cell_type": "code",
"execution_count": 219,
"id": "ec062702",
"metadata": {},
"outputs": [],
"source": [
"def total_price(costumer_orders):\n",
" cost_of_products = []\n",
"\n",
" for item in costumer_orders:\n",
" valid_price = False \n",
" while not valid_price:\n",
" try: \n",
" price = float(input(f\"Enter a valid price of {item}\")) \n",
" if price < 0: \n",
" raise ValueError(f\"Your {item} must have a positive price\")\n",
" cost_of_products.append(price)\n",
" valid_price = True\n",
" except ValueError as error: \n",
" print(f\"Error: {error}\")\n",
"\n",
" result = sum(cost_of_products)\n",
" return result\n",
" "
]
},
{
"cell_type": "code",
"execution_count": 217,
"id": "a5a76821",
"metadata": {},
"outputs": [],
"source": [
"costumer_orders = [\"mug\", \"hat\", \"book\"]"
]
},
{
"cell_type": "code",
"execution_count": 218,
"id": "aa071b4e",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Error: Your mug must have a positive price\n",
"Error: could not convert string to float: 'ha'\n"
]
},
{
"data": {
"text/plain": [
"33.5"
]
},
"execution_count": 218,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"total_price(costumer_orders)"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "ds",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +287,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.12.12"
}
},
"nbformat": 4,
Expand Down