python設計模式大全，python設計模式

python設計模式大全，python設計模式

本文執行個體講述了python常見的設計模式。分享給大家供大家參考，具體如下：

# #!/usr/bin/env python# # -*- coding:utf-8## class HttpBase:#   def get(self):#     psss# class Http1(HttpBase):#   def get(self):#     print 'http1'# class Http2(HttpBase):#   def get(self):#     print 'http2'### class Base:#   def __init__(self):#     self.httpobj = None#   def http(self):#     self.httpobj.get()#   def compute(self):#     self.http()#     self.show()#   #虛函數#   def show(self):#     pass#   def notify(self, k):#     print 'notify', k### #橋接模式，通過A，B 關聯不同的http1和http2# class BaseA(Base):#   def __init__(self):#     self.httpobj = Http1()#   def notify(self, k):#     print 'A notify', k#   def show(self):#     print 'show a'## class BaseB(Base):#   def __init__(self):#     self.httpobj = Http2()#   def notify(self, k):#     print 'B notify', k#   def show(self):#     print 'show b'## #觀測者模式# class Observer:#   def __init__(self):#     self.listOB = []#   def register(self, obj):#     self.listOB.append(obj)#   def notify(self):#     for obj in self.listOB:#       obj.notify(len(self.listOB))## #適配器模式# class B1:#   def http(self):#     BaseB().http()# #原廠模式# class Factory:#   def CreateA(self):#     return BaseA()#   def CreateB(self):#     return BaseB()### #單例模式# class Logger(object):#   log = None#   @staticmethod#   def new():##     import threading#     #安全執行緒#     mylock = threading.RLock()#     mylock.acquire()#     if not Logger.log:#       Logger.log = Logger()#     mylock.release()##     return Logger.log#   def write(self, v):#     print 'Logger ', v## if __name__ == "__main__":#   a = Factory().CreateA()#   b = Factory().CreateB()##   objS = Observer()#   objS.register(a)#   objS.register(b)##   a.compute()#   b.compute()#   objS.notify()##   b1 = B1()#   b1.http()##   Logger.new().log.write('v')