[Python-ideas] Detecting circular imports ?

[Tarek Ziadé]

On Thu, Nov 18, 2010 at 4:41 PM, Georg Brandl <g.brandl at gmx.net> wrote:
> Am 18.11.2010 16:22, schrieb Antoine Pitrou:
>> On Thu, 18 Nov 2010 16:14:35 +0100
>> Tarek Ziadé <ziade.tarek at gmail.com> wrote:
>>>
>>> I don't know of this was mentioned before, or how hard it would be.
>>> But it would be nice if Python had a specific "CircularImportError"
>>> raised in that case, or something..
>>> That would be a fabulous hint for developers.
>>
>> It can't be an error, since circular imports are supported.
>> There could be a warning, but IMO it would need to be silenced by
>> default (which means ImportWarning isn't appropriate).
>
> I thought ImportWarning was silenced by default?
>
> Anyway, I don't think that would be helpful for developers, who would
> need to turn on the warnings explicitly to see them.  But to think of
> that, you already need to suspect circular imports, and then it's easy
> to see it from the traceback anyway.

mmm I am not talking about warnings here. As Ian said, and to be more
explicit the use case is:

  Your program crashed with an error because you have a circular
import -- that's a bug you need to fix.

How can we tell it in a more explicit fashion that an AttributeError
which is not very meaningful in this case ?


> Georg
>
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Tarek Ziadé | http://ziade.org