本篇Pyhton语言入门教程将为大家讲解Pyhton编程的知识点，看完这篇文章会让你对Python编程的知识点有更加清晰的理解和运用。

class Animal:

    cls_attr = 'cls_attr'

    _cls_attr = '_cls_attr'

    __cls_attr = '__cls_attr'

    def __init__(self):

        self.ins_attr = 'ins_attr'

        self._ins_attr = '_ins_attr'

        self.__ins_attr = '__ins_attr'

        print('Animal __init__')

    def func(self):

        print('func')

    def _func(self):

        print('_func')

    def __func(self):

        print('__func')

    def __del__(self):

        print('Animal __del__')

class Dog(Animal):

    def __init__(self):

        '''子类重写__init__函数时，需手动调用父类的__init__函数'''

        print('Dog __init__')

        super(Dog, self).__init__()

    def __del__(self):

        print('Dog __del__')

        super(Dog, self).__del__()

a = Animal()

print(a.cls_attr)

print(a._cls_attr)

# print(a.__cls_attr)

print(a._Animal__cls_attr)

print(a.ins_attr)

print(a._ins_attr)

# print(a.__ins_attr)

print(a._Animal__ins_attr)

a.func()

a._func()

# a.__func()

a._Animal__func()

del a

print('-' * 50)

d = Dog()

print(d.cls_attr)

print(d._cls_attr)

# print(d.__cls_attr)

print(d._Animal__cls_attr)

print(d.ins_attr)

print(d._ins_attr)

# print(d.__ins_attr)

print(d._Animal__ins_attr)

d.func()

d._func()

# a.__func()

d._Animal__func()

del d

class Animal:

    cls_attr = 'cls_attr'

    _cls_attr = '_cls_attr'

    __cls_attr = '__cls_attr'

    def __init__(self):

        self.ins_attr = 'ins_attr'

        self._ins_attr = '_ins_attr'

        self.__ins_attr = '__ins_attr'

        print('Animal __init__')

    def func(self):

        print('func')

    def _func(self):

        print('_func')

    def __func(self):

        print('__func')

    def __del__(self):

        print('Animal __del__')

class Dog(Animal):

    def __init__(self):

        '''子类重写__init__函数时，需手动调用父类的__init__函数'''

        print('Dog __init__')

        super(Dog, self).__init__()

    def __del__(self):

        print('Dog __del__')

        super(Dog, self).__del__()

a = Animal()

print(a.cls_attr)

print(a._cls_attr)

# print(a.__cls_attr)

print(a._Animal__cls_attr)

print(a.ins_attr)

print(a._ins_attr)

# print(a.__ins_attr)

print(a._Animal__ins_attr)

a.func()

a._func()

# a.__func()

a._Animal__func()

del a

print('-' * 50)

d = Dog()

print(d.cls_attr)

print(d._cls_attr)

# print(d.__cls_attr)

print(d._Animal__cls_attr)

print(d.ins_attr)

print(d._ins_attr)

# print(d.__ins_attr)

print(d._Animal__ins_attr)

d.func()

d._func()

# a.__func()

d._Animal__func()

del d

本篇Pyhton教程将为大家讲解Pyhton编程的知识点，看完这篇文章会让你对Python编程的知识点有更加清晰的理解和运用。