[issue37321] IDLE: Make Subprocess Connection Errors consistent.

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:

New code tested by copying into a temporary test fixture.

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resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37321>
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