#定义一个中国人的类
class Chinese:
 #共同的特征
 country='China'
 
 #共同的技能
 def talk(self):
 print('is talking Chinese')
 def eat(self):
 print('is eating Chinese food')

#实例化的方式产生一个对象
p1=Chinese()
p2=Chinese()

#定义一个中国人的类
class Chinese:
 #共同的特征
 country='China'
 #初始化
 def __init__(self,name,age):
 self.name=name #每个对象都有自己的名字
 self.age=age #每个对象都有自己的年龄
 #共同的技能
 def talk(self):
 print('is talking Chinese')
 def eat(self):
 print('is eating Chinese food')
#实例化的方式产生一个对象
p1=Chinese('zhang',18)

Chinese.talk(Chinese)

p1=Chinese('zhang',18)
print(Chinese.__dict__)
#{'__module__': '__main__', 'country': 'China', '__init__': <function Chinese.__
# init__ at 0x000002187F35D158>, 'talk': <function Chinese.talk at 0x000002187F35D1E0>, 
# 'eat': <function Chinese.eat at 0x000002187F35D268>, '__
# dict__': <attribute '__dict__' of 'Chinese' objects>,
# '__weakref__': <attribute '__weakref__' of 'Chinese' objects>, '__doc__': None}
print(p1.__dict__)
#{'name': 'zhang', 'age': 18}

p1=Chinese('zhang',18)
p2=Chinese('li',19)
print(Chinese.talk)#<function Chinese.talk at 0x000001B8A5B7D1E0>
print(p1.talk) #<bound method Chinese.talk of <__main__.Chinese object at 0x000001B8A5B7BD68>>
print(p2.talk) #<bound method Chinese.talk of <__main__.Chinese object at 0x000001B8A5B7BDA0>>

class Chinese:
 country='China'
 def __init__(self,name,age):
 self.name=name 
 self.age=age 
 def talk(self):
 print('%s is talking Chinese'%self.name)
 def eat(self):
 print('is eating Chinese food')

p1=Chinese('zhang',18)
p2=Chinese('li',19)
Chinese.talk(p1) #zhang is talking Chinese
p1.talk()  #zhang is talking Chinese

class People:
 pass
class Student(People):#People称为基类或者父类
 pass

class People:
 pass
class Animals:
 pass
class Student(People,Animals):
 pass

print(Student.__bases__)#(<class '__main__.People'>, <class '__main__.Animals'>)
print(People.__bases__)#(<class 'object'>,)

class People:
 def __init__(self,name,age):
 self.name=name
 self.age=age
 def walk(self):
 print('%s is walkig'%self.name)
class Teacher(People):
 def __init__(self,name,age,level):
 People.__init__(self,name,age)
 self.level=level
t1=Teacher('zhang',18,10)
print(t1.level) #10
print(t1.name) #zhang  子类可以用父类定义的属性
t1.walk() #zhang is walking 子类无需定义就可以用父类的方法
print(issubclass(Teacher,People)) #True查看Teacher类是不是People类的子类

class Date:
 def __init__(self,year,mon,day):
 self.year=year
 self.mon=mon
 self.day=day
 def tell_birth(self):
 print('出生于%s年%s月%s日'%(self.year,self.mon,self.day))

class Teacher:
 def __init__(self,name,age,year,mon,day):
 self.name=name
 self.age=age
 self.birth=Date(year,mon,day)
t=Teacher('egon',19,2010,10,10)
print(t.birth)  #<__main__.Date object at 0x0000017E559380F0>
t.birth.tell_birth() #出生于2010年10月10日

class Date:
 def __init__(self,year,mon,day):
 self.year=year
 self.mon=mon
 self.day=day
 def tell_birth(self):
 print('出生于%s年%s月%s日'%(self.year,self.mon,self.day))
class Teacher:
 def __init__(self,name,age,*args):
 self.name=name
 self.age=age
 self.birth=Date(*args)
t=Teacher('egon',19,2010,10,10)
print(t.birth)  #<__main__.Date object at 0x0000017E559380F0>
t.birth.tell_birth() #出生于2010年10月10日

class Interface:
 def read(self):
 pass
 def write(self):
 pass
class Txt(Interface):
 def read(self):
 print('文本文档的读取方式')
 def write(self):
 print('文本文档的写入方式')
class Sata(Interface):
 def read(self):
 print('硬盘文件的读取方式')
 def write(self):
 print('硬盘文件的写入方式')
class process(Interface):
 def read(self):
 print('进程数据的读取方式')
 def write(self):
 print('进程数据的写入方式')

import abc
class File(metaclass=abc.ABCMeta):
 @abc.abstractmethod
 def read(self):
 pass
 @abc.abstractmethod
 def write(self):
 pass
#父类使用了抽象类，那子类就必须继承父类的方法，而且名字也必须一样
#这样就实现了代码级别的限制

class Txt(File):
 def read(self):
 print('文本文档的读取方式')
 def write(self):
 print('文本文档的写入方式')

class Parent(object):
 def __init__(self,name,age):
 self.name=name
 self.age=age

class Child(Parent):
 def __init__(self,name,age,salary):
 Parent.__init__(self,name,age,salary)
 self.salary=salary

class Parent(object):
 def __init__(self,name,age):
 self.name=name
 self.age=age

class Child(Parent):
 def __init__(self,name,age,salary):
 super().__init__(name,age)
 self.salary=salary