class program in python code example

Example 1: python classes

class Box(object): #(object) ending not required
  def __init__(self, color, width, height): # Constructor: These parameters will be used upon class calling(Except self)
    self.color = color # self refers to global variables that can only be used throughout the class
    self.width = width
    self.height = height
    self.area = width * height
  def writeAboutBox(self): # self is almost always required for a function in a class, unless you don't want to use any of the global class variables
    print(f"I'm a box with the area of {self.area}, and a color of: {self.color}!")

greenSquare = Box("green", 10, 10) #Creates new square
greenSquare.writeAboutBox() # Calls writeAboutBox function of greenSquare object

Example 2: classes in python

# Python classes

class Person():
  # Class object attributes (attributes that not needed to be mentioned when creating new class of person)
  alive = True
  
  def __init__(self, name, age):
    # In the __init__ method you can make attributes that will be mentioned when creating new class of person
    self.name = name
    self.age = age
    
  def speak(self):
    # In every method in class there will be self, and then other things (name, age, etc.)
    print(f'Hello, my name is {self.name} and my age is {self.age}') # f'' is type of strings that let you use variable within the string

person_one = Person('Sam', 23) # Sam is the name attribute, and 23 is the age attribute
person_one.speak() # Prints Hello, my name is Sam and my age is 23

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# Output:

>>> 'Hello, my name is Sam and my age is 23'