Claude

Day three was all about list comprehension, or manipulating lists in a concise manner. The main concept is that what would normally take a typical for loop to accomplish can be done in a single line. This appiles to lists, dictionaries, and tuples.

The Challenge:

Using your restaurant system from day two as a base, write the following using list comprehensions — no standard for loops allowed for these:

Day two was all about dictionaries, which have always been a real struggle for me. I’ve been told by many people that they’ve also struggled with them in the past, so at least I know I’m not alone.

The Challenge:

You’re building a simple restaurant order sytem.

Write code that:

1. Creates a dictionary of menu items with their prices (at least 5 items)
2. Creates an empty list called order
3. Writes a function add_item(order, item_name, menu) that:

• Adds the item to the order list if it exists in the menu
• Prints a warning if the item isn’t on the menu

4. Writes a function get_total(order, menu) that returns the total cost of everything in the order
5. Adds at least 3 items to the order (try adding one that doesn’t exist)
6. Prints the final order list and the total, formatted cleanly

My Code:

menu = {
    'Burger': 15,
    'Fries': 5,
    'Milkshake': 9,
    'Salad': 6,
    'Brownie': 3
}

order = []
total = 0


def add_item(order, item_name, menu):
    if item_name in menu:
        order.append(item_name)
        print(f"Added {item_name} to order.")
    else:
        print(f"Sorry, {item_name} is not on the menu!")

           

def get_total(order, menu):
    total = 0
    for i in order:
        price = menu[i]
        total += price
    
    
    return total

add_item(order, 'Burger', menu)
add_item(order, 'Pizza', menu)
add_item(order, 'Fries', menu)
add_item(order, 'Milkshake', menu)

bill = get_total(order, menu)


print("\nYour order:\n")
print(*order, sep="\n")
print(f"\nTotal: ${bill}")

The results of running the code are:

It’s been a while since I’ve heavily invested time into learning Python and I thought I’d do a refresher course, using Claude AI to help guide mea s an experiment. I decided to have Claude quiz me on what I know already in ten questions and build a 30 day course from there.

I passed the ten questions with flying colors and Claude said that my theoretical knowledge is excellent, so it suggested we get straight into functions and scope for day one.