[Python-Dev] avoiding accidental shadowing of top-level libraries by the main module

[Michael Foord]

On 12/07/2010 23:23, Nick Coghlan wrote:
> On Tue, Jul 13, 2010 at 8:06 AM, Michael Foord
> <fuzzyman at voidspace.org.uk>  wrote:
>    
>> An explicit error being raised instead would be just as good.
>>      
> Ah, refusing the temptation to guess.
>
> So the idea would be, when attempting to import __main__ under it's
> original name:
> 3.2 issue a DeprecationWarning
> 3.3 raise ImportError
>
>    
That's what I was suggesting.

> It still strikes me as wrong for the base import implementation, but
> PEP 302 may provide a mechanism for an interpreter shell to add its
> own "newbie protection" hooks (and that would have the virtue of being
> available much earlier and with a much lower chance of breaking
> anything).
>    

That would be a nice thing to have for earlier versions of Python. 
Personally I think the confusion the problem it causes would be nicer fixed.

All the best,

Michael

> Cheers,
> Nick.
>
>    


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