(python) Update object finalizers and add keepalives#26

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andrewwhitehead merged 1 commit intohyperledger:mainfrom andrewwhitehead:fix/python-keepalive

Jun 28, 2023

+144-52

Commits on Mar 12, 2023

use finalizers instead of __del__; add keepalives for related object handles
andrewwhitehead
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