[issue37877] MacOS crash appJar 3.7.3

[Michael Hearn]

New submission from Michael Hearn <michaeljosephhearn at gmail.com>:

macOS 10.14.6 -anaconda install Python 3.7.3  pip install appJar (0.94.0) 

On start of app with app.go() a crash will occur causing mac to logout.

Python 3.7.2 does not show this behavior

Will document on medium.

https://raw.githubusercontent.com/borosilicate/RCSB-Protein-Data-Bank-CSV-Maker/master/pygui.py

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nosy:  -ned.deily, ronaldoussoren
type:  -> crash

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37877>
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