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Lab Flow Control #546

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b523907
Flow Control lab done
Bhova45 Oct 22, 2025
4af9589
flow control lab done
Bhova45 Oct 22, 2025
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227 changes: 225 additions & 2 deletions lab-python-flow-control.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -37,11 +37,234 @@
"\n",
"3. Instead of updating the inventory by subtracting 1 from the quantity of each product, only do it for the products that were ordered (those in \"customer_orders\")."
]
},
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"source": [
"# Lab | Flow Control"
]
},
{
"cell_type": "markdown",
"id": "2dcb4c89",
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"source": [
"## Exercise: Managing Customer Orders Optimized\n",
"\n",
"In the last lab, you were starting an online store that sells various products. To ensure smooth operations, you developed a program that manages customer orders and inventory.\n",
"\n",
"You did so without using flow control. Let's go a step further and improve this code.\n",
"\n",
"Follow the steps below to complete the exercise:\n",
"\n",
"1. Look at your code from the lab data structures, and improve repeated code with loops.\n",
"\n",
"2. Instead of asking the user to input the name of three products that a customer wants to order, do the following:\n",
" \n",
" a. Prompt the user to enter the name of a product that a customer wants to order.\n",
" \n",
" b. Add the product name to the \"customer_orders\" set.\n",
" \n",
" c. Ask the user if they want to add another product (yes/no).\n",
" \n",
" d. Continue the loop until the user does not want to add another product.\n",
"\n",
"3. Instead of updating the inventory by subtracting 1 from the quantity of each product, only do it for the products that were ordered (those in \"customer_orders\")."
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "abe51832",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"--- Inventory Setup ---\n"
]
}
],
"source": [
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"inventory = {}\n",
"customer_orders = set()\n",
"\n",
"# The loop to set up the initial inventory:\n",
"print(\"--- Inventory Setup ---\")\n",
"for product in products:\n",
" while True:\n",
" try:\n",
" # Use f-string for clear input prompt\n",
" quantity = int(input(f\"Enter the initial quantity for {product}: \"))\n",
" if quantity >= 0:\n",
" inventory[product] = quantity\n",
" break\n",
" else:\n",
" print(\"Quantity cannot be negative. Please try again.\")\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a whole number.\")\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "31011e93",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"--- Customer Order ---\n",
"Addedt-shirtto the order.\n",
"Addedmugto the order.\n",
"Addedhatto the order.\n",
"Addedt-shirtto the order.\n",
"Addedmugto the order.\n",
"Addedhatto the order.\n",
"Addedhatto the order.\n",
"Addedhatto the order.\n",
"Addedt-shirtto the order.\n",
"Addedt-shirtto the order.\n",
"Addedhatto the order.\n",
"Addedmugto the order.\n",
"Addedmugto the order.\n",
"Addedt-shirtto the order.\n",
"Addedt-shirtto the order.\n",
"Addedt-shirtto the order.\n",
"Addedmugto the order.\n",
"Addedhatto the order.\n",
"Addedmugto the order.\n",
"Addeddone is not valid product.Please choose from the list or type 'done'.\n",
"invalid input. Please enter 'yes' or 'no'.\n"
]
}
],
"source": [
"# Customer Order Input \n",
"print(\"\\n--- Customer Order ---\")\n",
"Ordering = True\n",
"while Ordering:\n",
" # Prompt the user to enter the name of a product \n",
" product = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
" product_name = input(f\"Enter a product to order ({','.join(product)})or 'done':\").lower().strip()\n",
" if product_name == 'done':\n",
" Ordering = False\n",
" # Input validation \n",
" if product_name in products: \n",
" # Add the product name to the \"\"customer_orders \"set\n",
" customer_orders.add(product_name)\n",
" print(f\"Added{product_name}to the order.\")\n",
" else:\n",
" print(f\"Added{product_name} is not valid product.Please choose from the list or type 'done'.\")\n",
" # Ask the user if they want to add another product (yes/no)\n",
" while True:\n",
" more =input(\"Do you want to add another product? (yes/no):lower().strip()\")\n",
" if more in ['no', 'n']:\n",
" Ordering = False\n",
" break \n",
" elif more in ['yes','y']:\n",
" break\n",
" else:\n",
" print(\"invalid input. Please enter 'yes' or 'no'.\")"
]
},
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"cell_type": "code",
"execution_count": null,
"id": "676b563d",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Products in Customer Orders set:\n",
"{'t-shirt', 'mug', 'hat'}\n"
]
}
],
"source": [
"# Print the products in the customer_orders set \n",
"from hashlib import new\n",
"\n",
"\n",
"print(\"\\nProducts in Customer Orders set:\")\n",
"print (customer_orders)\n",
"## Calculate and Print Order Statistics \n",
"total_products_available = len(products)\n",
"total_products_ordered = len(customer_orders)\n",
"if total_products_available >0:\n",
" percentage_ordered = (total_products_ordered/total_products_available)* 100\n",
" percentage_ordered = round(percentage_ordered, 2)\n",
"else:\n",
" percentage_ordered = 0.0\n",
" order_status = (total_products_ordered, percentage_ordered)\n",
" print(\"\\nOrder Statistic\")\n",
" print(f\"Total Products Ordered:{order_status[0]}\")\n",
" print(f\"Percentage of Products Ordered:{order_status[1]}%\")\n",
" ## Update inventory for only Ordered Products \n",
" print(\"\\n--- Updating Inventory---\")\n",
" for product_ordered in customer_orders:\n",
" if product_ordered in inventory[product_ordered]>0:\n",
" inventory[product_ordered]-=1\n",
" print(f\"Inventory reduced for {product_ordered}.New quantity:{inventory[product_ordered]}\")\n",
" elif product_ordered in inventory and inventory[product_ordered]==0:\n",
" print(f\"Warning: Attempted to order{product_ordered},but inventory was already 0. Inventory remains 0.\")\n",
" ## Print Updated Inventory \n",
" print(\"\\nUpdated Inventory:\")\n",
" for product, quantity in inventory.items():\n",
" print(f\"{product}:{quantity}\")\n",
" \n",
"\n",
"\n",
"print(\"\\nProducts in Customer Orders set:\")\n",
"print (customer_orders)\n",
"## Calculate and Print Order Statistics \n",
"total_products_available = len(products)\n",
"total_products_ordered = len(customer_orders)\n",
"if total_products_available >0:\n",
" percentage_ordered = (total_products_ordered/total_products_available)* 100\n",
" percentage_ordered = round(percentage_ordered, 2)\n",
"else:\n",
" percentage_ordered = 0.0\n",
" order_status = (total_products_ordered, percentage_ordered)\n",
" print(\"\\nOrder Statistic\")\n",
" print(f\"Total Products Ordered:{order_status[0]}\")\n",
" print(f\"Percentage of Products Ordered:{order_status[1]}%\")\n",
" ## Update inventory for only Ordered Products \n",
" print(\"\\n--- Updating Inventory---\")\n",
" for product_ordered in customer_orders:\n",
" if product_ordered in inventory[product_ordered]>0:\n",
" inventory[product_ordered]-=1\n",
" print(f\"Inventory reduced for {product_ordered}.New quantity:{inventory[product_ordered]}\")\n",
" elif product_ordered in inventory and inventory[product_ordered]==0:\n",
" print(f\"Warning: Attempted to order{product_ordered},but inventory was already 0. Inventory remains 0.\")\n",
" ## Print Updated Inventory \n",
" print(\"\\nUpdated Inventory:\")\n",
" for product, quantity in inventory.items():\n",
" print(f\"{product}:{quantity}\")\n",
" "
]
}
],
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Expand All @@ -55,7 +278,7 @@
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