فيما يلي امثلة على الاصناف / الفئات / الكلاسات في لغة بايثون
وايضا امثلة توضح الفرق بين class و object
مثال على انشاء كلاس في بايثون:
# Python program to
# demonstrate instantiating
# a class
class Dog:
attr1 = "mamal"
attr2 = "dog"
# A sample method
def fun(self):
print("I'm a", self.attr1)
print("I'm a", self.attr2)
# Driver code
# Object instantiation
Rodger = Dog()
# Accessing class attributes
# and method through objects
print(Rodger.attr1)
Rodger.fun()
المخرجات:
mamal
I'm a mamal
I'm a dog
مثال على تعريف تابع الباني constructor في صنف:
وطبعا تابع الباني هو حالة خاصة من التوابع, مسؤول عن انشاء instance من class
# A Sample class with init method
class Person:
# init method or constructor
def __init__(self, name):
self.name = name
# Sample Method
def say_hi(self):
print('Hello, my name is', self.name)
p = Person('Nikhil')
p.say_hi()
المخرجات:
Hello, my name is Nikhil
مثال على class and instance باستخدام البايثون:
# Python program to show that the variables with a value
# assigned in the class declaration, are class variables and
# variables inside methods and constructors are instance
# variables.
# Class for Dog
class Dog:
# Class Variable
animal = 'dog'
# The init method or constructor
def __init__(self, breed, color):
# Instance Variable
self.breed = breed
self.color = color
# Objects of Dog class
Rodger = Dog("Pug", "brown")
Buzo = Dog("Bulldog", "black")
print('Rodger details:')
print('Rodger is a', Rodger.animal)
print('Breed: ', Rodger.breed)
print('Color: ', Rodger.color)
print('\nBuzo details:')
print('Buzo is a', Buzo.animal)
print('Breed: ', Buzo.breed)
print('Color: ', Buzo.color)
# Class variables can be accessed using class
# name also
print("\nAccessing class variable using class name")
print(Dog.animal)
المخرجات:
Rodger details:
Rodger is a dog
Breed: Pug
Color: brown
Buzo details:
Buzo is a dog
Breed: Bulldog
Color: black
Accessing class variable using class name
dog
