[issue31505] assertion failure in json, in case _json.make_encoder() received a bad encoder() argument

[Oren Milman]

Changes by Oren Milman <orenmn at gmail.com>:


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keywords: +patch
pull_requests: +3638
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31505>
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