@decomaker(deco_args)
    def foo(func_opt_args)

@g
@f
def foo():
    statement

#!/usr/bin/python
def  deco(func):
    print 'start'
    func()
    print 'end'
    return func

@deco
def foo():
    print 'In foo'

foo()
foo()

start
In foo
end
In foo
In foo

def  deco(func):
    def _deco(x):    #該函數為內嵌函數
        print 'start'
        func(x)
        print 'end'
    return _deco

@deco
def foo(x):
    print 'In foo, get value is: %d' % x

foo(123456)

start
In foo, get value is: 123456
end

def deco(arg):
    def wrapper1(func):
        def _deco(x):
            print "get type is: ", arg
            func(x)
        return _deco

    def wrapper2(func):
        def _deco(x):
            func(x)
            print "get type is: ", arg
        return _deco

    if arg == 'type1':
        return wrapper1
    else:
        return wrapper2

@deco("type2")
def foo(x):
    print 'In foo: ', x

foo(123)

In foo:  123
get type is:  type2

#!/usr/bin/python
#coding=utf-8
import functools

def log(prefix, suffix):
    def deco(func):
        @functools.wraps(func)
        def wrapper(*args, **kargs):
            print '%s log start' % prefix
            print('get a is: %s' % args[0])
            print('get b is: %s' % args[1])
            print('get c is: %s' % args[2])
            print('get d is: %s' % kargs['d'])
            print('get d is: %s' % kargs['f'])
            func(*args, **kargs)
            print '%s log end' % suffix
        return wrapper
    return deco

@log('logstart', 'logend')
def test(a, b, c, d, f):
    print 'call func name is: %s' % test.__name__

test(1, 2, 3, d = 'dddd', f = 'ffff')

logstart log start
get a is: 1
get b is: 2
get c is: 3
get d is: dddd
get d is: ffff
call func name is: test
logend log end