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Error handling lab completed #414

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187 changes: 185 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 +72,194 @@
"\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": 2,
"id": "559062c5",
"metadata": {},
"outputs": [],
"source": [
"\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"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "e2ab90e3",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. Please enter a valid quantity.\n"
]
},
{
"data": {
"text/plain": [
"{'mug': 1, 'hat': 2, 'bucket': 3}"
]
},
"execution_count": 3,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"initialize_inventory([\"mug\",\"hat\",\"bucket\"])"
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "fe21ea23",
"metadata": {},
"outputs": [],
"source": [
"def calculate_total_price(products):\n",
" for product in products:\n",
" valid_price = False\n",
" while not valid_price:\n",
" try:\n",
" price_of_each_product = float(input(f\"Enter the price of the {product}:\"))\n",
" if price_of_each_product <= 0:\n",
" raise ValueError(\"Invalid quantity! Please enter a non-negative value.\")\n",
" valid_price = True\n",
" except ValueError as error:\n",
" print(f\"Error : {error}\")\n",
" price_of_each_product += price_of_each_product\n",
" return price_of_each_product\n",
" \n",
"\n"
]
},
{
"cell_type": "code",
"execution_count": 26,
"id": "677d78b5",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Error : Invalid quantity! Please enter a non-negative value.\n",
"Error : Invalid quantity! Please enter a non-negative value.\n"
]
},
{
"data": {
"text/plain": [
"10.0"
]
},
"execution_count": 26,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"calculate_total_price([\"mug\",\"hat\",\"bucket\"])"
]
},
{
"cell_type": "code",
"execution_count": 23,
"id": "6664b41f",
"metadata": {},
"outputs": [],
"source": [
"# 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",
" # - If the user enters an invalid product name (e.g., a product name that is not in the inventory), or that doesn't have stock available, display an error message and ask them to re-enter the product name. *Hint: you will need to pass inventory as a parameter*\n",
"# - Use a try-except block to handle the error and continue prompting the user until a valid product name is entered.\n",
"\n",
"def get_customer_orders(products):\n",
" customer_order = set()\n",
" num_of_orders = 0\n",
" order = False\n",
" while not order:\n",
" try:\n",
" num_of_orders = int(input(\"Enter the number of orders you want to order: \"))\n",
" if num_of_orders > 0:\n",
" order = 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",
" \n",
" for num in range(num_of_orders):\n",
" product_exists_in_inventory = True\n",
" while product_exists_in_inventory:\n",
" try:\n",
" product_order = input(f\"Enter the product names that you want to order {num+1}:\")\n",
" if product_order in products:\n",
" customer_order.add(product_order)\n",
" product_exists_in_inventory = False\n",
" else:\n",
" print(f\"{product_order} is not in the inventory\")\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a valid product.\")\n",
"\n",
" return num_of_orders, customer_order \n",
" \n",
" \n",
" \n",
" \n"
]
},
{
"cell_type": "code",
"execution_count": 24,
"id": "61761938",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"2 is not in the inventory\n",
"3 is not in the inventory\n",
"3 is not in the inventory\n",
"3 is not in the inventory\n"
]
},
{
"data": {
"text/plain": [
"(2, {'bucket', 'mug'})"
]
},
"execution_count": 24,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"get_customer_orders([\"mug\",\"hat\",\"bucket\"])"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +273,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.12.7"
}
},
"nbformat": 4,
Expand Down