python里运用私有属性和方法总结

class File:

  def __init__(self, name):

    self.name = name

    self.code = "ABCDEF"

    

file_A = File("file_A")

class File:

  def __init__(self, name):

    self.name = name

    self.__code = "ABCDEF"

    

file_A = File("file_A")

print(file_A.code)

class File:

  def __init__(self, name):

    self.name = name

    self.__code = "ABCDEF"

    

file_A = File("file_A")

print(file_A.__code)

class File:

  def __init__(self, name):

    self.name = name

    self.__code = "ABCDEF"

  def open(self):

    print("This is the AAA file!")

    

file_A = File("file_A")

file_A.open()

class File:

  def __init__(self, name):

    self.name = name

    self.__code = "ABCDEF"

  def __open(self):

    print("This is the AAA file!")

    

file_A = File("file_A")

file_A.__open()

class File:

  def __init__(self, name):

    self.name = name

    self.__code = "ABCDEF"

  def __open(self):

    print("This is the AAA file!")

    

file_A = File("file_A")

print(file_A._File__code)

file_A._File__open()

class Person:

def __init__(self):
self.__name = 'haha'#私有属性
self.age = 22

def __get_name(self):##私有方法
return self.__name

def get_age(self):
return self.age

person = Person()
print person.get_age()
print person.__get_name()
运行结果是：22 Traceback (most recent call last): File "E:\pythoner\zenghe\jay.py", line 38, in print person.__get_name() AttributeError: Person instance has no attribute '__get_name'