python create object of class code example

Example 1: how to make a class in python

class Person:
  def __init__(self, _name, _age):
    self.name = _name
    self.age = _age
   
  def sayHi(self):
    print('Hello, my name is ' + self.name + ' and I am ' + self.age + ' years old!')
    
p1 = Person('Bob', 25)
p1.sayHi() # Prints: Hello, my name is Bob and I am 25 years old!

Example 2: 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 3: class and object in python

#NOTES
class PartyAnimal:
  	def Party():
      #blahblah

an=PartyAnimal()

an.Party()# this is same as 'PartyAnimal.Party(an)'

Example 4: how to create an object in python

class ClassName:
    self.attribute_1 = variable_1 #Set attributes for all object instances
    self.attrubute_2 = variable_2
    
    def __init__(self, attribute_3, attribute_4): #Set attributes at object creation
        self.attribute_3 = attribute_3            
        self.attribute_4 = attribute_4

    def method(self): #All methods should include self
		print("This is a method example.") #Define methods just like functions 


object = Object(4, "string") #Set attribute_3 and attribute_4
object.method() #Methods are called like this.