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63 changes: 63 additions & 0 deletions .ipynb_checkpoints/lab-python-flow-control-checkpoint.ipynb
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{
"cells": [
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"cell_type": "markdown",
"id": "d3bfc191-8885-42ee-b0a0-bbab867c6f9f",
"metadata": {
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"source": [
"# Lab | Flow Control"
]
},
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"cell_type": "markdown",
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"## 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\")."
]
}
],
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141 changes: 138 additions & 3 deletions lab-python-flow-control.ipynb
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"\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": 1,
"id": "96a1ae08-0375-4799-9fae-c009b9da17ae",
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"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"--- Welcome to the Optimized Order System ---\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"\n",
"Enter the name of a product to order (e.g., Laptop, Mouse): Laptop, Mouse, Monitor, Webcam\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"'Laptop, Mouse, Monitor, Webcam' is not a recognized product in the inventory.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Do you want to add another product to the order? (yes/no): yes\n",
"\n",
"Enter the name of a product to order (e.g., Laptop, Mouse): Laptop\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"'Laptop' added to the order.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Do you want to add another product to the order? (yes/no): Mouse\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"--- Order Collection Complete ---\n",
"Products Ordered: {'Laptop'}\n",
"Current Inventory Before Update: {'Laptop': 10, 'Mouse': 25, 'Keyboard': 15, 'Monitor': 8, 'Webcam': 20}\n",
"\n",
"--- Updating Inventory ---\n",
"Inventory for 'Laptop' updated. New quantity: 9\n",
"\n",
"--- Final Inventory Status ---\n",
"{'Laptop': 9, 'Mouse': 25, 'Keyboard': 15, 'Monitor': 8, 'Webcam': 20}\n"
]
}
],
"source": [
"# Initial Inventory (simulating the data structure from your previous lab)\n",
"inventory = {\n",
" \"Laptop\": 10,\n",
" \"Mouse\": 25,\n",
" \"Keyboard\": 15,\n",
" \"Monitor\": 8,\n",
" \"Webcam\": 20\n",
"}\n",
"\n",
"# Set to store the products ordered by the customer\n",
"customer_orders = set()\n",
"\n",
"print(\"--- Welcome to the Optimized Order System ---\")\n",
"\n",
"# Step 1: Use a while loop to collect an arbitrary number of orders\n",
"# a, b, c, d: Prompt, Add, Ask, Continue\n",
"while True:\n",
" # a. Prompt the user to enter the name of a product\n",
" product_name = input(\"\\nEnter the name of a product to order (e.g., Laptop, Mouse): \").strip()\n",
" \n",
" # Optional: Basic validation to check if the product is in inventory\n",
" if product_name in inventory:\n",
" # b. Add the product name to the \"customer_orders\" set\n",
" customer_orders.add(product_name)\n",
" print(f\"'{product_name}' added to the order.\")\n",
" else:\n",
" print(f\"'{product_name}' is not a recognized product in the inventory.\")\n",
"\n",
" # c. Ask the user if they want to add another product\n",
" add_more = input(\"Do you want to add another product to the order? (yes/no): \").strip().lower()\n",
"\n",
" # d. Continue the loop until the user does not want to add another product\n",
" if add_more != 'yes':\n",
" break\n",
"\n",
"print(\"\\n--- Order Collection Complete ---\")\n",
"print(\"Products Ordered:\", customer_orders)\n",
"print(\"Current Inventory Before Update:\", inventory)\n",
"\n",
"# Step 2: Use a for loop to update the inventory only for ordered products\n",
"# We assume an order is for 1 unit of each product type for simplicity,\n",
"# as per the original requirement to subtract 1 from the quantity.\n",
"print(\"\\n--- Updating Inventory ---\")\n",
"for product in customer_orders:\n",
" # Check if the product is in the inventory just in case (though it should be)\n",
" if product in inventory:\n",
" if inventory[product] > 0:\n",
" # Update the inventory by subtracting 1\n",
" inventory[product] -= 1\n",
" print(f\"Inventory for '{product}' updated. New quantity: {inventory[product]}\")\n",
" else:\n",
" print(f\"Warning: '{product}' is out of stock and could not be fulfilled.\")\n",
" \n",
"# Final output\n",
"print(\"\\n--- Final Inventory Status ---\")\n",
"print(inventory)"
]
},
{
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Expand All @@ -55,7 +190,7 @@
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