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Update lab-python-error-handling.ipynb #637

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69 changes: 67 additions & 2 deletions lab-python-error-handling.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,8 @@
" print(f\"Error: {error}\")\n",
" inventory[product] = quantity\n",
" return inventory\n",
" \n",
" \n",
"\n",
"# Or, in another way:\n",
"\n",
Expand Down Expand Up @@ -64,6 +66,9 @@
"2. Modify the `calculate_total_price` function to include error handling.\n",
" - If the user enters an invalid price (e.g., a negative value or a non-numeric value), display an error message and ask them to re-enter the price for that product.\n",
" - Use a try-except block to handle the error and continue prompting the user until a valid price is entered.\n",
" \n",
"\n",
" \n",
"\n",
"3. Modify the `get_customer_orders` function to include error handling.\n",
" - If the user enters an invalid number of orders (e.g., a negative value or a non-numeric value), display an error message and ask them to re-enter the number of orders.\n",
Expand All @@ -72,11 +77,71 @@
"\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": 3,
"id": "4292b28c",
"metadata": {},
"outputs": [],
"source": [
"def calculate_total_price(customer_orders):\n",
" total_price = 2\n",
" for product in customer_orders:\n",
" valid_price = False\n",
" while not valid_price:\n",
" try:\n",
" price = float(input(f\"Enter the price for {product}: \"))\n",
" if price < 2:\n",
" raise ValueError(\"Price cannot be less than 2.\")\n",
" total_price += price\n",
" valid_price = True\n",
" except ValueError as error:\n",
" print(f\"Error: {error} Please enter a valid price.\")\n",
" return total_price"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "feb77992",
"metadata": {},
"outputs": [],
"source": [
"def get_customer_orders(inventory):\n",
" # Validar número de pedidos\n",
" valid_num = False\n",
" while not valid_num:\n",
" try:\n",
" num_orders = int(input(\"Enter the number of customer orders: \"))\n",
" if num_orders <= 0:\n",
" raise ValueError(\"Number of orders must be positive.\")\n",
" valid_num = True\n",
" except ValueError as error:\n",
" print(f\"Error: {error} Please enter a valid number.\")\n",
"\n",
" customer_orders = set()\n",
" for _ in range(num_orders):\n",
" valid_product = False\n",
" while not valid_product:\n",
" try:\n",
" product = input(\"Enter the name of a product: \").strip()\n",
" if product not in inventory:\n",
" raise ValueError(f\"'{product}' is not in the inventory.\")\n",
" if inventory[product] == 0:\n",
" raise ValueError(f\"'{product}' is out of stock.\")\n",
" customer_orders.add(product)\n",
" valid_product = True\n",
" except ValueError as error:\n",
" print(f\"Error: {error} Please enter a valid product.\")\n",
"\n",
" return customer_orders"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": ".venv (3.15.0)",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +155,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.15.0a7"
}
},
"nbformat": 4,
Expand Down