The Birth | The Architect

A blueprint is useless if every house looks exactly the same. We need customization!

When a robot is born (created), we want to give it a unique name and paint job immediately.

The `init` Spell

This is a special spell (method) that runs automatically the moment an object is created. It determines the "Construction Settings".

class Cat:
  def __init__(self, name):
      self.name = name

# "name" is passed to __init__
kitty = Cat("Luna") 
print(kitty.name) # Luna

Define __init__

Inside Robot, define def __init__(self, name, color):.

Store Data

Inside __init__, save the values: self.name = name and self.color = color. self means "this specific robot I am building right now".

Build Custom Robots

Create bot1 with Robot("R2", "Blue") and bot2 with a different name/color.

It is spelled __init__ with two underscores on each side! It stands for "initialize".

Suggested Solution

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Solution:

class Robot:
  def __init__(self, name, color):
      self.name = name
      self.color = color

# Build R2-D2
bot1 = Robot("R2", "Blue")

# Build C-3PO
bot2 = Robot("C3", "Gold") 

# Print their details
print("Bot 1: " + bot1.name + " (" + bot1.color + ")")
print("Bot 2: " + bot2.name + " (" + bot2.color + ")")

Advanced Tips

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F. Attributes

Variables inside an object (like self.name and self.color) are called Attributes.
Each object has its own set of attributes. Changing bot1.name does not change bot2.name. They are independent minds!

The __init__ Spell

F. Attributes

The `init` Spell