python设计模式第二十天【模版方法模式】

1.应用场景

（1）具有相同的操作，但是步骤中具有不同的操作细节

2.代码实现

#!/usr/bin/env python
#! _*_ coding:UTF-8 _*_

from abc import ABCMeta, abstractmethod

class AbstractClass(object):

    __metaclass__ = ABCMeta

    def templateMethod(self):
        '''在抽象类中定义了相同的步骤'''
        self.method1()
        self.method2()

    @abstractmethod
    def method1(self):
        pass

    @abstractmethod
    def method2(self):
        pass

class ConcreteClass1(AbstractClass):

    def method1(self):
        '''在实现类中定义每个步骤的细节'''
        print "method1 of class1"

    def method2(self):
        print "method2 of class1"

class ConcreteClass2(AbstractClass):

    def method1(self):
        print "method1 of class2"

    def method2(self):
        print "method2 of class2"

if __name__ == "__main__":
    class1 = ConcreteClass1()
    class1.templateMethod()

    class2 = ConcreteClass2()
    class2.templateMethod()

结果：

/Users/liudaoqiang/PycharmProjects/numpy/venv/bin/python /Users/liudaoqiang/Project/python_project/day21_template/template_test.py
method1 of class1
method2 of class1
method1 of class2
method2 of class2

Process finished with exit code 0