Why I need to declare import as global in function

Fredrik Lundh fredrik at pythonware.com
Mon Nov 28 15:06:49 CET 2005


didier.doussaud at gmail.com wrote:

> I have a stange side effect in my project :
>
> in my project I need to write "gobal" to use global symbol :
>
> ...
> import math
> ...
> def f() :
>    global math # necessary ?????? else next line generate an error
> message  ?????

what error message?

>    print math.pi

you only need global in this case if you assign to the name somewhere
later in the function (e.g. "math = ..." or "import math" or some other
assignment)

please post the error message (the entire traceback).

</F>






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