The Class block

What it does

A template for objects: a name, and the fields every object made from it has. Pet("Tom") makes a new Pet; the values in the brackets fill its fields in order, and the rest start at the class's own values.

Use it for

• Many things of the same kind: pets in a shop, players in a game, books in a library.
• Giving things their own actions (methods), like pet.feed() or player.jump().

What to fill in

Class name

Like Pet. Class names start with a capital letter, by habit.

Fields

Each field's name, and what a new object starts with, like energy = 5. Starting values are plain values: numbers, text, lists or true/false.

Try it

Open it in the editor, press Run, then change it and run it again.

1class Account:2    def __init__(self, owner="", balance=0):3        self.owner = owner4        self.balance = balance5
6    def deposit(self, amount):7        self.balance = self.balance + amount8
9    def withdraw(self, amount):10        if amount <= self.balance:11            self.balance = self.balance - amount12        else:13            print("Sorry " + self.owner + ", there's only ₹" + str(self.balance) + " in your account.")14
15
16asha = Account("Asha", 100)17ravi = Account("Ravi")18asha.deposit(50)19ravi.deposit(20)20asha.withdraw(500)21ravi.withdraw(5)22print(asha.owner + ": ₹" + str(asha.balance))23print(ravi.owner + ": ₹" + str(ravi.balance))

See it in use

Examples with the Class block

• 📒Report Card
• 🏦Bank Accounts