python 面向对象 __dict__

Posted 2020-11-04 minger_lcm

 

 

打印 类或对象中的所有成员

类的构造函数属性 属于对象；类中的公有属性和方法等属于类

 

打印信息

class schoolMember(object):
    \'\'\'学校成员分类\'\'\'
    member = 0

    def __init__(self, name, age, sex):
        self.name = name
        self.age = age
        self.sex = sex

        self.enroll()  # 实例化时候 自动注册

    def enroll(self):
        \'\'\'注册\'\'\'
        print("just enrolled a new school member [%s]" % self.name)
        schoolMember.member += 1


    def tell(self):
        print("-------%s info-------" % self.name)

    def __del__(self):  # 析构函数
        print("开除了 [%s]" % self.name)
        schoolMember.member -= 1


class Teather(schoolMember):
    \'\'\'教师类\'\'\'

    def __init__(self, name, age, sex, salary, course):
        schoolMember.__init__(self, name, age, sex)
        self.salary = salary
        self.course = course

    def teaching(self):
        print("tearcher [%s] is teaching [%s]" % (self.name, self.course))

    def tell(self):
        print(\'\'\'
        ----------info:%s----------
        name:%s
        age:%s
        salary:%s
        \'\'\' % (self.name,self.name,self.age,self.salary))


class Student(schoolMember):
    \'\'\'学生类\'\'\'

    def __init__(self, name, age, sex, course, tuition):
        schoolMember.__init__(self, name, age, sex)
        self.course = course
        self.tuition = tuition
        self.amount = 0

    def pay_tuition(self, amount):
        print("student [%s] has just paied [%s]" % (self.name, amount))
        self.amount += amount

t1 = Teather("mike", 28, "F*M", 10000, "python")
s1 = Student("jianlin", 21, "N/A","pythons15", 100000)
s2 = Student("mayun", 12, "M", "pythons15", 210000)

print(schoolMember.member)

print("-"*40)
t1.tell()

print("-"*40)
del s1
print(schoolMember.member)
del s2
print(schoolMember.member)
del t1
print(schoolMember.member)




\'\'\'
just enrolled a new school member [mike]
just enrolled a new school member [jianlin]
just enrolled a new school member [mayun]
3
----------------------------------------

        ----------info:mike----------
        name:mike
        age:28
        salary:10000
        
----------------------------------------
开除了 [jianlin]
2
开除了 [mayun]
1
开除了 [mike]
0
\'\'\'

 

用__dict__  以字典方式打印所有属性

 

class schoolMember(object):
    \'\'\'学校成员分类\'\'\'
    member = 0

    def __init__(self, name, age, sex):
        self.name = name
        self.age = age
        self.sex = sex

        self.enroll()  # 实例化时候 自动注册

    def enroll(self):
        \'\'\'注册\'\'\'
        print("just enrolled a new school member [%s]" % self.name)
        schoolMember.member += 1


    def tell(self):
        print("-------%s info-------" % self.name)

    def __del__(self):  # 析构函数
        print("开除了 [%s]" % self.name)
        schoolMember.member -= 1


class Teather(schoolMember):
    \'\'\'教师类\'\'\'

    def __init__(self, name, age, sex, salary, course):
        schoolMember.__init__(self, name, age, sex)
        self.salary = salary
        self.course = course

    def teaching(self):
        print("tearcher [%s] is teaching [%s]" % (self.name, self.course))



class Student(schoolMember):
    \'\'\'学生类\'\'\'

    def __init__(self, name, age, sex, course, tuition):
        schoolMember.__init__(self, name, age, sex)
        self.course = course
        self.tuition = tuition
        self.amount = 0

    def pay_tuition(self, amount):
        print("student [%s] has just paied [%s]" % (self.name, amount))
        self.amount += amount

t1 = Teather("mike", 28, "F*M", 10000, "python")
s1 = Student("jianlin", 21, "N/A","pythons15", 100000)
s2 = Student("mayun", 12, "M", "pythons15", 210000)

print(schoolMember.member)

print("-"*40)

print(t1.__dict__)   # # 以字典方式打印所有属性

print("-"*40)
del s1
print(schoolMember.member)
del s2
print(schoolMember.member)
del t1
print(schoolMember.member)




\'\'\'
just enrolled a new school member [mike]
just enrolled a new school member [jianlin]
just enrolled a new school member [mayun]
3
----------------------------------------
{\'name\': \'mike\', \'age\': 28, \'sex\': \'F*M\', \'salary\': 10000, \'course\': \'python\'}
----------------------------------------
开除了 [jianlin]
2
开除了 [mayun]
1
开除了 [mike]
0
\'\'\'

 

class schoolMember(object):
    \'\'\'学校成员分类\'\'\'
    member = 0

    def __init__(self, name, age, sex):
        self.name = name
        self.age = age
        self.sex = sex

        self.enroll()  # 实例化时候 自动注册

    def enroll(self):
        \'\'\'注册\'\'\'
        print("just enrolled a new school member [%s]" % self.name)
        schoolMember.member += 1


    def tell(self):
        print("%s info".center(40, "-") % self.name)

        for i in self.__dict__:  # 循环字典   t1.__dict__
            print("\\t", i, self.__dict__[i])

        print("End".center(40, "-")+"\\n")


    def __del__(self):  # 析构函数
        print("开除了 [%s]" % self.name)
        schoolMember.member -= 1


class Teather(schoolMember):
    \'\'\'教师类\'\'\'

    def __init__(self, name, age, sex, salary, course):
        schoolMember.__init__(self, name, age, sex)
        self.salary = salary
        self.course = course

    def teaching(self):
        print("tearcher [%s] is teaching [%s]" % (self.name, self.course))



class Student(schoolMember):
    \'\'\'学生类\'\'\'

    def __init__(self, name, age, sex, course, tuition):
        schoolMember.__init__(self, name, age, sex)
        self.course = course
        self.tuition = tuition
        self.amount = 0

    def pay_tuition(self, amount):
        print("student [%s] has just paied [%s]" % (self.name, amount))
        self.amount += amount


t1 = Teather("mike", 28, "F*M", 10000, "python")
s1 = Student("jianlin", 21, "N/A","pythons15", 100000)
s2 = Student("mayun", 12, "M", "pythons15", 210000)

print(schoolMember.member)


t1.tell()
s1.tell()
s2.tell()


del s1
print(schoolMember.member)
del s2
print(schoolMember.member)
del t1
print(schoolMember.member)




\'\'\'
just enrolled a new school member [mike]
just enrolled a new school member [jianlin]
just enrolled a new school member [mayun]
3
----------------mike info-----------------
     name mike
     age 28
     sex F*M
     salary 10000
     course python
------------------End-------------------

----------------jianlin info-----------------
     name jianlin
     age 21
     sex N/A
     course pythons15
     tuition 100000
     amount 0
------------------End-------------------

----------------mayun info-----------------
     name mayun
     age 12
     sex M
     course pythons15
     tuition 210000
     amount 0
------------------End-------------------

开除了 [jianlin]
2
开除了 [mayun]
1
开除了 [mike]
0
\'\'\'

 

 

以字典形式打印这个类所有属性，方法

获取类的成员，即：公有属性、方法等

#! /usr/bin/env python
# -*- coding: utf-8 -*-
# __author__ = "minger"
# Date: 2018/2/27

class dog(object):


    def __init__(self,name):
        self.name = name

    def eat(self):
        print("%s is eating %s" % (self.name,\'ss\'))

    def talk(self):
        print("%s is taking" % self.name)

print(dog.__dict__) # 以字典形式打印这个类所有属性，方法

# {\'__module__\': \'__main__\', \'__init__\': <function dog.__init__ at 0x000000000283F7B8>, \'eat\': <function dog.eat at 0x000000000283F840>, \'talk\': <function dog.talk at 0x000000000283F8C8>, \'__dict__\': <attribute \'__dict__\' of \'dog\' objects>, \'__weakref__\': <attribute \'__weakref__\' of \'dog\' objects>, \'__doc__\': None}

 

只打印实例变量属性，不包括类属性

class dog(object):


    def __init__(self,name):
        self.name = name

    def eat(self):
        print("%s is eating %s" % (self.name,\'ss\'))

    def talk(self):
        print("%s is taking" % self.name)

# print(dog.__dict__) # 以字典形式打印这个类所有属性，方法
d = dog("mike")
print(d.__dict__)   # 只打印实例变量属性，不包括类属性


# {\'name\': \'mike\'}