Huayang Xia kirjoitti:
> It will print 15. The closure gets the value at run time.
>
> Could we treat closure as part of the external function and it shares
> the local variable with its holder function?
>
I don't quite get what you are trying to tell us but if you think that
in your example code:
def testClosure(maxIndex) :
def closureTest():
return maxIndex
maxIndex += 5
return closureTest()
print testClosure(10)
you are returning a callable function you are all wrong. This can be
easily seen by:
>>> type(testClosure(10))
15
<type 'int'>
The mistake is that you shouldn't return closureTest() but closureTest
instead. The correct way would be:
>>> def testClosure2(maxIndex):
def closureTest():
return maxIndex
maxIndex += 5
return closureTest
>>> f2 = testClosure2(10)
<function closureTest at 0x00D82530>
>>> type(f2)
<type 'function'>
>>> print f2()
15
Cheers,
Jussi
--
http://mail.python.org/mailman/listinfo/python-list
