[issue30256] Adding a SyncManager Queue proxy to a SyncManager dict or Namespace proxy raises an exception

[Ken Jin]

Change by Ken Jin <kenjin4096 at gmail.com>:


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nosy: +kj
nosy_count: 12.0 -> 13.0
pull_requests: +25555
pull_request: https://github.com/python/cpython/pull/26994

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue30256>
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