python classes examples

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: python class

class Person:
  def __init__(self, name, age):
    self.name = name
    self.age = age
  def myfunc(self):
    print("Hello my name is " + self.name +".")

p1 = Person("Victor", 24)
p1.myfunc()

Example 3: 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

==================================================================
# Output:

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

Example 4: class in python

class LambdaClass: 
    x = lambda a, b, c, d, e, f: a + b + c + d + e + f
    print(x(31231, 312, 312, 31, 12, 31))

print(LambdaClass)

Example 5: class in python

10
<function Person.greet at 0x7fc78c6e8160>
This is a person class