[issue8900] IDLE crashes if Preference set to At Startup -> Open Edit Window

[Roger Serwy]

Roger Serwy <roger.serwy at gmail.com> added the comment:

Implicit relative imports are not related to this issue. 

Can someone please review the given patch?

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stage:  -> patch review

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue8900>
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