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Editor: HoLin
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Size: 768
Editor: HoLin
Comment:
Deletions are marked like this. Additions are marked like this.
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  {{{!#python   {{{#!python

Python

Python AOP

  • 用原类实现AOP 
    •    1 class MetaAll(type):
   2    def __new__(mcl, name, bases, dict):
   3       def log(func):
   4          def f(*args, **kwds):
   5             print 'pre %s' % func.__name__
   6             value = func(*args, **kwds)
   7             print 'post %s' % func.__name__
   8             return value
   9          return f
  10       for attr, value in dict.iteritems():
  11          if attr.startswith('set'):
  12             dict[attr] = log(value)
  13       return super(MetaAll, mcl).__new__(mcl, name, bases, dict)
  14 
  15 __metaclass__ = MetaAll
  16 
  17 class A:
  18    def __init__(self):
  19       self.__x = 1
  20 
  21    def getx(self):
  22       return self.__x
  23 
  24    def setx(self, value):
  25       self.__x = value
  26 
  27 a = A()
  28 a.setx(2)
  29 print a.getx()

HoLin/Python (last edited 2009-12-25 07:16:42 by localhost)