What happens to module's variables after a "from module import" ?

[Paul Moore]

On 7 November 2017 at 15:39, ast <nomail at com.invalid> wrote:
> Hello
>
> Here is my module tmp.py:
>
> a=0
>
> def test():
>    global a
>    print(a)
>    a+=1
>
> If I import function "test" from module "tmp" with:
>
>>>> from tmp import test
>
>
> it works
>
>>>> test()
>
> 0
>>>>
>>>> test()
>
> 1
>
> But where variable "a" is located ? I can't find it anywhere

It's in the "tmp" module, where you defined it. But because you didn't
ask for a reference to it in your import statement, it's not
accessible to you[1].
Do

    import tmp
    print(tmp.a)

and you can see it.

Paul

[1] Technically you can find it via the globals of the function test,
as test.__globals__['a'], but if you understand how that works, you
wouldn't have been asking the question in the first place :-)