Privatization and processing class

Coding _ * _ #: _ * _. 8 UTF- 
# @time: 2020/1/16 22:18 
# @author: Dery 
# @file: class_private.py 
# @Software: PyCharm 


# privatization 
# package: 1 Private 2. the definition of public property part of the set \ get method 
# __ attribute: that is to privatize property, access is limited to the class 
' '' 
privatization 
1. hidden attribute, the outside world will not be free to modify 
2 can also be modified, by way to do 
    DEF setXXX (Self, xxx): 
        1. screening assignment of content 
        if xxx eligibility: 
            assignment 
        else: 
            not assigned 
3. If you want to get a specific attribute, use the get method completes 
    def get (self, xxx) : 
        return self.xxx 

'' ' 


class Student: 
    # # 18 is a class attribute __age = 
    DEF the __init __ (Self, name, Age): 
        Self .__ name = name
        Age Age .__ = Self 
        Self .__ Score = 59 

    # define the public set / get method 
    # set for assignment, get to the value 

    DEF set_age (Self, Age): 
        IF 0 <Age <= 120: 
            Self .__ = Age Age 
        the else: 
            ( 'not within the age range!') Print 

    DEF set_name (Self, name): 
        IF len (name) == 6: 
            Self .__ name = name 
        the else: 
            ( '! name instead of six') Print 

    DEF get_age (Self): 
        # Self .__ Age = Age 
        return Self .__ Age 

    DEF __str __ (Self): 
        return 'name: {}, Age: {}, test scores: {}'. the format (Self .__ name, Self .__ Age, Self .__ score) 


zhangsan = Student ( 'Joe Smith 11111111', 90) 
# zhangsan.set_name ( 'yupengnihao ')
Print (zhangsan.get_age ()) 
Print (zhangsan) 
# Print (dir (Student)) 
# Print (dir (zhangsan))

# _*_ coding:utf-8 _*_
# @Time     :2020/1/16 23:00
# @Author   :dery
# @File     :private_handle.py
# @Software :PyCharm


class Student:
    # __age = 18      # 类属性
    def __init__(self, name, age):
        self.name = name
        self.__age = age

    @property
    def age(self):
        return self.__age

    @age.setter
    def age(self, age):
        if 0 < age <= 120:
            self.__age = age
        else:
            print('年龄不在范围内！')

    # def get_age(self):
    #     # self.__age = age
    #     return self.__age

    def __str__(self):
        return 'Name: {}, Age: {}'. the format (the self.name, Self .__ Age) 


S = Student ( 'zhangsna', 30) 

# privatization assignment 
Print (s.age) 
Print (the dir (S))