🧙‍♂️ Python Wizard!

🔍 Quick Lesson

Lists in Python are used to store multiple items in a single variable. Think of them like magical scrolls where you can keep your potions, ingredients, or spell names in one place!

1. Creating a List

potions = ["Healing", "Invisibility", "Strength"]

This creates a list called potions with three elements.

2. Accessing Elements

Lists are ordered and can be indexed using numbers starting from 0:

print(potions[0])  # Outputs: Healing

Use negative numbers to start from the end: potions[-1] gives Strength.

3. Modifying Lists

You can update list items by accessing their index:

potions[1] = "Flying"

This changes the second item from "Invisibility" to "Flying".

4. List Methods

• append() – adds an item to the end: potions.append("Mana")
• remove() – removes a specific item: potions.remove("Strength")
• insert() – inserts an item at a specific index: potions.insert(1, "Speed")
• len() – returns the number of items: len(potions)

5. Looping Through a List

                    for potion in potions:
                        print(potion)
                

This will print each item in the potions list.

6. Slicing Lists

Use slicing to access parts of a list:

potions[1:3]

Returns a new list with items at index 1 and 2.

7. Nested Lists

Lists can contain other lists (like having a scroll inside another scroll):

inventory = [["Sword", "Shield"], ["Potion", "Elixir"]]

inventory[0][1] returns Shield.