python的类方法和静态方法

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Release: 2016-06-06 11:20:54
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本文实例讲述了python的类方法和静态方法。分享给大家供大家参考。具体分析如下:

python没有和C++中static关键字,它的静态方法是怎样的呢?还有其它语言中少有的类方法又是神马?

python中实现静态方法和类方法都是依赖于python的修饰器来实现的。

代码如下:

class MyClass:
 
    def  method(self):
           print("method")
 
    @staticmethod
    def  staticMethod():
            print("static method")
 
     @classmethod
     def classMethod(cls):
           print("class method")

大家注意到普通的对象方法、类方法和静态方法的去别了吗?
对象方法有self参数,类方法有cls参数,静态方法是不需要这些附加参数的。
在C++中是没有类方法着个概念的的

代码如下:


class A(object):
    "This ia A Class"

    @staticmethod
    def Foo1():
        print("Call static method foo1()\n")

    @classmethod
    def Foo2(cls):
        print("Call class method foo2()")
        print("cls.__name__ is ",cls.__name__)

A.Foo1();
A.Foo2();

结果是:
Call static method foo1()

Call class method foo2()
cls.__name__ is  A

希望本文所述对大家的Python程序设计有所帮助。

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