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class A:
def foo(self, y):
print y
foo = classmethod(foo)
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class A:
@classmethod
def foo(self, y):
print y
ËäÈ»classmethodÊÇÄÚÖú¯Êý£¬µ«ËüºÍÆÕͨµÄº¯ÊýûÓÐÁ½Ñù£¬Òò´ËÄãÒ²¿ÉÒÔ´´½¨×Ô¼ºµÄº¯Êýת»¯Âß¼­£¬È磺
def mydecorator(func):
print 'mydecorator was called.'
func.name = 'myfun'
return func
¸ÃÐÞÊÎÆ÷½«ÉÔ΢ÐÞ¸ÄÁËÔ­º¯ÊýµÄÂß¼­£ºÊ×ÏÈ´òÓ¡Ò»¶ÎÎÄ×Ö“mydecorator was called.”£¬È»ºó¸øÔ­º¯ÊýÌí¼ÓÁËÒ»¸önameÊôÐÔ£¬ÊôÐÔֵΪ"myfun"£¬Ö®ºóÔÙ½«º¯Êý·Å»Ø£¬Ê¹Ó÷½·¨ºÍµ÷Óýá¹ûÈçÏ£º
class A:
@mydecorator
def foo(self, y):
print y
if __name__ == '__main__':
a = A()
a.foo(1)
ÔËÐнá¹ûΪ£º
mydecorator was called.
1
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ʵÏÖ__call__·½·¨µÄclassʾÀý£º
class mydecorator:
def __init__(self, func):
self.func = func
def __call__(self):
print “mydecorator was called.”
return self.func
ʹÓ÷½·¨Í¬Ç°ÃæµÄʾÀýÒ»Ñù£¬ÒòΪÎÒÃÇ¿ÉÒÔÏñº¯ÊýÒ»Ñùµ÷ÓøÃÀࣺmydecorator()£¬²»Í¬µÄÊÇ£¬¸ÃÀàÊÇÒÔ±»×°Êεĺ¯Êý×÷Ϊ¹¹Ôì²ÎÊý£¬¶ø²»ÊÇ×÷Ϊ__call__µÄ²ÎÊý¡£¸ü¸´ÔÓµÄ×°ÊÎÆ÷£º
def mydecorator(arg):
print “arg is ”, arg
def newdec(func):
print ‘new decor


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