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Lab Lesson 2 - Data structures - Oxana Ribeiro #808

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112 changes: 110 additions & 2 deletions lab-python-data-structures.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
"\n",
"1. Define a list called `products` that contains the following items: \"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\".\n",
"\n",
"\n",
"2. Create an empty dictionary called `inventory`.\n",
"\n",
"3. Ask the user to input the quantity of each product available in the inventory. Use the product names from the `products` list as keys in the `inventory` dictionary and assign the respective quantities as values.\n",
Expand Down Expand Up @@ -50,11 +51,118 @@
"\n",
"Solve the exercise by implementing the steps using the Python concepts of lists, dictionaries, sets, and basic input/output operations. "
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"mug is out of stock.\n",
"Customer orders: {'book', 'keychain', 'mug'}\n",
"Order Statistics:\n",
"Total Products Ordered: 3\n",
"Percentage of Products Ordered: 60.0%\n",
"t-shirt: 1\n",
"mug: 0\n",
"hat: 1\n",
"book: 0\n",
"keychain: 0\n"
]
}
],
"source": [
"#1. Define a list called `products` that contains the following items: \n",
"#\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\".\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"#2. Create an empty dictionary called `inventory`.\n",
"inventory = {}\n",
"\n",
"#3. Ask the user to input the quantity of each product available in the inventory. \n",
"#Use the product names from the `products` list as keys in the `inventory` dictionary \n",
"#and assign the respective quantities as values.\n",
"for product in products:\n",
" quantity = int(input(f\"Enter the quantity of {product}: \"))\n",
" inventory[product] = quantity\n",
"\n",
"#4. Create an empty set called `customer_orders`.\n",
"\n",
"#Please keep in mind, because we use set, the customer can only order each product once.\n",
"customer_orders = set()\n",
"\n",
"#5. Ask the user to input the name of three products that a customer wants to order \n",
"# (from those in the products list, meaning three products out of \"t-shirt\", \"mug\", \"hat\", \n",
"# \"book\" or \"keychain\". Add each product name to the `customer_orders` set.\n",
"y=3\n",
"n = 0\n",
"\n",
"# I will use a placeholder inventory to track the available quantities during the\n",
"# ordering process\n",
"inventory_workingvalue = inventory.copy()\n",
"\n",
"#The while loop bellow would allow the user to buy several products of the same cathegory \n",
"# while it is available in the inventory. But since we are using a set for customer orders,\n",
"# the customer can only order each product once =(.\n",
"\n",
"while n < y:\n",
" order = input(f\"Enter the name of a product you would like to order {n+1}: \") \n",
" if order in products and inventory_workingvalue[order] > 0:\n",
" customer_orders.add(order)\n",
" inventory_workingvalue[order] -= 1\n",
" n+=1\n",
" elif order in products and inventory_workingvalue[order] == 0:\n",
" print(f\"{order} is out of stock.\") \n",
" else:\n",
" print(f\"{order} is not available in the products list.\\nWe only sell t-shirts, mugs, hats, books, keychains\")\n",
" \n",
"#6. Print the products in the `customer_orders` set.\n",
"print(\"Customer orders:\", customer_orders)\n",
"\n",
"#7. Calculate the following order statistics:\n",
"# - Total Products Ordered: The total number of products in the `customer_orders` set.\n",
"# - Percentage of Products Ordered: The percentage of products ordered compared to \n",
"# the total available products.\n",
" \n",
"# Store these statistics in a tuple called `order_status`.\n",
"total_products_ordered = len(customer_orders)\n",
"percentage_products_ordered = (total_products_ordered / sum(inventory.values())) * 100\n",
"order_status = (total_products_ordered, percentage_products_ordered)\n",
"\n",
"#8. Print the order statistics using the following format:\n",
"# ```\n",
"# Order Statistics:\n",
"# Total Products Ordered: <total_products_ordered>\n",
"# Percentage of Products Ordered: <percentage_ordered>% \n",
"# ```\n",
"print(\"Order Statistics:\")\n",
"print(f\"Total Products Ordered: {total_products_ordered}\")\n",
"print(f\"Percentage of Products Ordered: {percentage_products_ordered}%\")\n",
"\n",
"#9. Update the inventory by subtracting 1 from the quantity of each product. \n",
"# Modify the `inventory` dictionary accordingly.\n",
"\n",
"def inventory_new(inventory):\n",
" for product in customer_orders:\n",
" if product in inventory and inventory[product] > 0:\n",
" inventory[product] -= 1\n",
" return inventory\n",
"\n",
"inventory = inventory_new(inventory) \n",
"\n",
"#10. Print the updated inventory, displaying the quantity of each product on separate lines.\n",
"for product, quantity in inventory.items():\n",
" print(f\"{product}: {quantity}\")\n",
"\n"
]
}
],
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"name": "python3"
},
Expand All @@ -68,7 +176,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
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