How do I tell if I'm running under IDLE?

[Dave Angel]

On 04/06/2013 08:35 PM, Mark Janssen wrote:
>> (Apologies in advance if you get multiple copies of this. My Usenet
>> connection seems to be having a conniption fit at the moment.)
>>
>> I'm looking for an official way to tell what interpreter (if any) is
>> running, or at least a not-too-horrible unofficial way.
>
> I was going to work on this IDLE TODO myself, but haven't got around
> to it.  I think the best way is to use the tempfile module (to be
> clear this is a fix within IDLE itself).
>
> This is the whole procedure that should be necessary:
>
> 1) At IDLE startup check to see if there is an existing idle tempfile
> and delete it, if so.
> 2) Create an IDLE temp file.
> 3) At IDLE shutdown, delete prior tempfile.
>
> Now if anyone wants to see if IDLE is running, they only need to check
> to see if the tempfile exists.
>
> Hope that helps.  If you implement it, you can take the item off the
> IDLE todo list too.
>

Are you assuming then that there can be only one instance of IDLE ?  And 
that if a separate Python program is run, we should pretend that it's 
running under IDLE?


-- 
DaveA