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210 changes: 207 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 +72,217 @@
"\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": "47b226c1-c908-4f08-9cc7-e70d6e2f1ed8",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Put the pice for banana: 4\n",
"Put the pice for apple: \n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid entry. Please enter a numerc value.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Put the pice for apple: 5\n",
"Put the pice for pear: 6\n"
]
},
{
"data": {
"text/plain": [
"15"
]
},
"execution_count": 1,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"products = ['banana', 'apple', 'pear']\n",
"\n",
"def calculate_total_price(products):\n",
" totalprice = 0\n",
" for product in products:\n",
" validprice = False\n",
" while not validprice:\n",
" try:\n",
" price = float(input(f\"Put the pice for {product}: \"))\n",
" if price >= 0:\n",
" totalprice += price\n",
" validprice = True\n",
" else:\n",
" print(\"Error: enter a non-negative price.\")\n",
" except ValueError:\n",
" print(\"Invalid entry. Please enter a numerc value.\")\n",
" return int(totalprice)\n",
"\n",
"calculate_total_price(products)\n"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "a26c9497-d9e1-4754-a118-e410a0f2ac22",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Number of orders: 3\n",
"Produto #1: 4\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid produtc\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Product #1: 3\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid produtc\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Product #1: r\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid produtc\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Product #1: 4\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid produtc\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Product #1: banana\n",
"Quantity of banana: 2\n",
"Produto #2: 3\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid produtc\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Product #2: banana\n",
"Quantity of banana: 4\n",
"Produto #3: apple\n",
"Quantity of apple: 4\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'banana': 4, 'apple': 4}\n"
]
}
],
"source": [
"inventory = {\"banana\": 10, \"apple\": 5, \"pear\": 8} \n",
"\n",
"orders = get_customer_orders(inventory)\n",
"print(orders)\n",
"\n",
"def get_customer_orders(inventory):\n",
" orders = {}\n",
"\n",
" while True:\n",
" try:\n",
" num_orders = int(input(\"Number of orders: \"))\n",
" if num_orders > 0:\n",
" break\n",
" print(\"Enter a positive number.\")\n",
" except ValueError:\n",
" print(\"Yu have to enter an integer number.\")\n",
" for i in range(num_orders):\n",
" product = input(f\"Produto #{i+1}: \").strip().lower()\n",
" while product not in inventory or inventory[product] <= 0:\n",
" print(\"Invalid produtc\")\n",
" product = input(f\"Product #{i+1}: \").strip().lower()\n",
"\n",
" while True:\n",
" try:\n",
" qty = int(input(f\"Quantity of {product}: \"))\n",
" if 0 < qty <= inventory[product]:\n",
" break\n",
" print(\"Invalid quantity.\")\n",
" except ValueError:\n",
" print(\"You have to enter an integer number.\")\n",
"\n",
" orders[product] = qty\n",
"\n",
" return orders\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "df12b8c5-5d8e-4d6b-9eee-0f56c6099037",
"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 +294,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.13.5"
}
},
"nbformat": 4,
Expand Down