ai a écrit :
> It assumes that there is a module A which have two global variables X
> and Y. If I run "import A" in the IDLE shell, then I can use A.X and
> A.Y correctly. But if I want to change the module A and then delete
> the variable Y, I find I can use A.Y just the same as before!
It's unlikely to be true, see below.
> In fact, I have tried all the following methods but can't remove the
> A.Y:
> execute "import A" again
> "reload(A)"
> "del A; import A"
> Yes, if you use "del A.Y", it works. But it is stupid since there are
> probably many names. In my thought, if no one references objects in A,
> "del A" will release all memory about A. But it seems that the fact is
> not. So I can not refresh the namespace to follow changes of a module
> easily and I will worry about the memory if I del a module.
> I want to know if there is a way to clear a module entirely.
>
Actually I do not see your problem and your exact need, when I type the
following in python prompt I just see expected behavior, what is a
problem to you ? Maybe you could post a code explaining it.
In [64]: import a
In [65]: a.X
Out[65]: 0
In [66]: a.X = 2
In [67]: del a
In [68]: import a as b
In [69]: b.X
Out[69]: 2
In [71]: for name in [ n for n in b.__dict__ if not n.startswith('__') ]
:
....: b.__dict__.__delitem__(name)
....:
....:
In [72]: b.X
---------------------------------------------------------------------------
<type 'exceptions.AttributeError'> Traceback (most recent call
last)
C:\Documents and Settings\maric\Bureau\<ipython console> in <module>()
<type 'exceptions.AttributeError'>: 'module' object has no attribute 'X'
In [73]: reload(b)
Out[73]: <module 'a' from 'a.pyc'>
In [74]: b.X
Out[74]: 0
In [75]: del b.X
In [76]: del b
In [77]: import a
In [78]: a.b
---------------------------------------------------------------------------
<type 'exceptions.AttributeError'> Traceback (most recent call
last)
C:\Documents and Settings\maric\Bureau\<ipython console> in <module>()
<type 'exceptions.AttributeError'>: 'module' object has no attribute 'b'
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