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Author rhettinger
Recipients cheryl.sabella, ned.deily, rhettinger, serhiy.storchaka, taleinat, terry.reedy
Date 2019-09-14.06:12:11
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Message-id <1568441531.64.0.31583694881.issue35379@roundup.psfhosted.org>
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1. your tracebacks are on macOS.
Yes

2. They occur with installed, not repository Python.
python installer

 3. The missing attribute depends on whether Shell or an editor window is closed either only or last. 
I don't know the trigger event

What macOS version?
Mojave 10.14.6

python.org installer? 
https://www.python.org/ftp/python/3.8.0/python-3.8.0b4-macosx10.9.pkg

Thanks for looking at this.
History
Date User Action Args
2019-09-14 06:12:11rhettingersetrecipients: + rhettinger, terry.reedy, taleinat, ned.deily, serhiy.storchaka, cheryl.sabella
2019-09-14 06:12:11rhettingersetmessageid: <1568441531.64.0.31583694881.issue35379@roundup.psfhosted.org>
2019-09-14 06:12:11rhettingerlinkissue35379 messages
2019-09-14 06:12:11rhettingercreate