python class
class Person:#set name of class to call it
def __init__(self, name, age):#func set ver
self.name = name#set name
self.age = age#set age
def myfunc(self):#func inside of class
print("Hello my name is " + self.name)# code that the func dose
p1 = Person("barry", 50)# setting a ver fo rthe class
p1.myfunc() #call the func and whitch ver you want it to be withpython 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()creating python classes
class car:
def __init__(self, model, color):
self.model = model
self.color = color
tesla = car("model 3", "black")why should i use classes in python
"Why should I use classes in python?"
Classes are essential in OOP.
A good reason to use classes is to make your code structured and organised.
Furthermore it is easy to import functions when they are part of a class since you can just import the class.
Classes provide methods that are useful such as the __repr__ method which allows you to represent an object by a string.
Classes allow for access control (encapsulation) by using the underscore character.class python
class A: # define your class A
.....
class B: # define your class B
.....
class C(A, B): # subclass of A and B
obj = C() #to create instance
# issubclass(sub, sup) boolean function returns true if the given
# subclass sub is indeed a subclass of the superclass sup
# isinstance(obj, Class) boolean function returns true if obj is an
# instance of class Class or is an instance of a subclass of Classclass python
class Charge:
def __init__(self, employee, discount):
self.employee = employee
self.discount = discount
def _discounted_pricey(self):
item_price = 100
discounted_price = item_price * (1-self.discount)
return discounted_price
def __discounted_price(self):
item_price = 100
discounted_price = item_price * (1-self.discount)
return discounted_price
def pays(self):
price_to_charge = self.__discounted_price() # gotcha: self.
print(f'Charge {self.employee} ${price_to_charge:.2f} ({self.discount:.2%} off)')
Employee = Charge(employee='Billy Beans', discount=.1)
print(Employee.employee) # Billy Beans
print(Employee.discount) # 0.1
print(Employee._discounted_pricey()) # 90.0
print(Employee.__discounted_price()) # AttributeError: 'Charge' object has no attribute '__discounted_price'
print(Employee.item_price) # AttributeError: 'Charge' object has no attribute 'item_price'
Employee.pays() # Charge Billy Beans $90.00 (10.00% off)Copyright © 2021 Codeinu
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