From a487df0f254b1d77d005f47242a35c94e18fcce3 Mon Sep 17 00:00:00 2001
From: Safina E Jahan <safina.jahan@gmail.com>
Date: Fri, 28 Nov 2025 22:56:08 +0100
Subject: [PATCH] solved_lab-python-flow-control

---
 .../lab-python-flow-control-checkpoint.ipynb  |  63 ++++++++
 anaconda_projects/db/project_filebrowser.db   | Bin 0 -> 32768 bytes
 lab-python-flow-control.ipynb                 | 141 +++++++++++++++++-
 3 files changed, 201 insertions(+), 3 deletions(-)
 create mode 100644 .ipynb_checkpoints/lab-python-flow-control-checkpoint.ipynb
 create mode 100644 anaconda_projects/db/project_filebrowser.db

diff --git a/.ipynb_checkpoints/lab-python-flow-control-checkpoint.ipynb b/.ipynb_checkpoints/lab-python-flow-control-checkpoint.ipynb
new file mode 100644
index 0000000..f4c7391
--- /dev/null
+++ b/.ipynb_checkpoints/lab-python-flow-control-checkpoint.ipynb
@@ -0,0 +1,63 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "d3bfc191-8885-42ee-b0a0-bbab867c6f9f",
+   "metadata": {
+    "tags": []
+   },
+   "source": [
+    "# Lab | Flow Control"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "3851fcd1-cf98-4653-9c89-e003b7ec9400",
+   "metadata": {},
+   "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\")."
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.9.13"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}
diff --git a/anaconda_projects/db/project_filebrowser.db b/anaconda_projects/db/project_filebrowser.db
new file mode 100644
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diff --git a/lab-python-flow-control.ipynb b/lab-python-flow-control.ipynb
index f4c7391..418f663 100644
--- a/lab-python-flow-control.ipynb
+++ b/lab-python-flow-control.ipynb
@@ -37,13 +37,148 @@
     "\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",
+   "metadata": {},
+   "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)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "3cb0a9f8-241c-4286-b3fd-8ecc95b82119",
+   "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": {
@@ -55,7 +190,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.5"
   }
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