Dear Sir,

I got the solution. Thanks

On Tue, 4 Aug 2020, 16:55 Terry J. Reedy, <report@bugs.python.org> wrote:

>
> Terry J. Reedy <tjreedy@udel.edu> added the comment:
>
> One should never see this message.  As far as I remember, I have seen it
> only once in the last several years.  It is intended to indicate a 'random'
> non-reproducible glitch in the communication machinery connecting the IDLE
> GUI process and the user code execution process.  The most likely solution
> is to retry what you were doing.  A report should only be made is the error
> is reproducible. "Unrecoverable, server exiting" is meant to convey this,
> but the meaning should be explained in the message.  So I consider this a
> doc improvement issue.
>
> If you report a repeatable failure, then we can look into that.
>
> ----------
>
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> Python tracker <report@bugs.python.org>
> <https://bugs.python.org/issue41468>
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