day 25インタフェースクラス抽象クラスパッケージ

復習:

#    ：         
#     *****
    #       ，              ，    
    #          ，             
    #        ，        
    #      self   ，      self   
#     ***
    #        ：
        #            ：        ，       
        #           .mro  ，           
        # python3     super  ，                 

#   ：Python     
#   ：Python    
#             
#    ：           
#          ，                  —— java
#           ，                 —— java
from abc import abstractmethod,ABCMeta
class Payment(metaclass=ABCMeta):  #          type
    @abstractmethod
    def pay(self,money):pass   #         
class Wechat(Payment):
    def pay(self,money):
        print('        %s '%money)
class Alipay(Payment):
    def pay(self,money):
        print('         %s ' % money)
class Applepay(Payment):
    def pay(self,money):
        print('   applepay   %s ' % money)
def pay(pay_obj,money):  #       
    pay_obj.pay(money)

app = Applepay()
p = Payment()

#     
import abc #  abc       
class All_file(metaclass=abc.ABCMeta):
    all_type='file'
    @abc.abstractmethod #      ，      
    def read(self):
        '         '
        with open('filaname') as f:
            pass

    @abc.abstractmethod #      ，      
    def write(self):
        '         '
        pass

class Txt(All_file): #       ，      read write  
    def read(self):
        print('         ')
    def write(self):
        print('         ')

class Sata(All_file): #       ，      read write  
    def read(self):
        print('         ')

    def write(self):
        print('         ')

class Process(All_file): #       ，      read write  
    def read(self):
        print('         ')

    def write(self):
        print('         ')

wenbenwenjian=Txt()

yingpanwenjian=Sata()

jinchengwenjian=Process()

#           ,           
wenbenwenjian.read()
yingpanwenjian.write()
jinchengwenjian.read()

print(wenbenwenjian.all_type)
print(yingpanwenjian.all_type)
print(jinchengwenjian.all_type)

from abc import abstractmethod,ABCMeta
class Swim_Animal(metaclass=ABCMeta):
    @abstractmethod
    def swim(self):pass

class Walk_Animal(metaclass=ABCMeta):
    @abstractmethod
    def walk(self):pass

class Fly_Animal(metaclass=ABCMeta):
    @abstractmethod
    def fly(self):pass

class Tiger(Walk_Animal,Swim_Animal):
    def walk(self):
        pass
    def swim(self):
        pass
class OldYing(Fly_Animal,Walk_Animal):pass
class Swan(Swim_Animal,Walk_Animal,Fly_Animal):pass
#                             

#     ：   
#                      ，                  
#                ，                       
#          ：                           
# java ：
# java             ,                      
#          ，  java        ，       Interface               

# python
# python        ：
  #  python              class       
# python        ：                 
  #       python  

#            ：     ，             
#                  

#        ——            
#                  
class Person:
    __key = 123  #       
    def __init__(self,name,passwd):
        self.name = name
        self.__passwd = passwd   #     
    def __get_pwd(self):         #     
        return self.__passwd   #             ，       _  
    def login(self):          #             
        self.__get_pwd()
alex = Person('alex','alex3714')
print(alex._Person__passwd)   # _  __   
print(alex.get_pwd())

#                     
    #        
    #        
    #          
#                  

#    python       
# def func(int num,str name):
#     pass
#
# func('alex',2)
# class Payment:pass

# class Alipay():
#     def pay(self,money):
#         print('         %s ' % money)
#
# class Applepay():
#     def pay(self,money):
#         print('   applepay   %s ' % money)
#
# def pay(pay_obj,money):  #              
#     pay_obj.pay(money)
#
# pay()

#      
# python         
#     
# list tuple
#              
#                  。
#          ，              ，      
# list tuple     ，            ，          
#    ：                  
#    ：     ,     

class List():
    def __len__(self):pass
class Tuple():
    def __len__(self):pass

def len(obj):
    return obj.__len__()

l = Tuple()
len(l)
#
# #             
# # python           
#          python             

転載先:https://www.cnblogs.com/Murraya/p/11209906.html