Python cannot create weak reference

Describes the cause and action for error messages.


Error Message(English):
cannot create weak reference

Resolution


関連リンク


Weak References in python - Stack Overflow
https://stackoverflow.com/questions/9908013/weak-references-in-python

Python: which types support weak references?
https://stackoverflow.com/questions/52011430/python-which-types-support-weak-references

Python-scrapy -sqlite3-pipelines print out the error: cannot ...
https://stackoverflow.com/questions/40626549/python-scrapy-sqlite3-pipelines-print-out-the-error-can・・・

Getting "weak reference" error in cryptography-0.8.2 python ...
https://stackoverflow.com/questions/29784651/getting-weak-reference-error-in-cryptography-0-8-2-pyth・・・

Weakref and __slots__
https://stackoverflow.com/questions/19526340/weakref-and-slots

Since 3.6: TypeError: cannot create weak reference to '_Any' object ...
https://github.com/python/typing/issues/345

TypeError: cannot create weak reference to 'Lock' object ・ Issue #331 ...
https://github.com/python-trio/trio/issues/331

Pythonメモ-41 (__weakref__ 属性) (weakref, 弱 ... - いろいろ備忘録日記
https://devlights.hatenablog.com/entry/2017/12/07/175922

weakref - 西尾泰和のはてなダイアリー
http://d.hatena.ne.jp/nishiohirokazu/20090505/1241502724

python 弱参照 finalize - Weakrefと__slots__ - CODE Q&A 問題解決
https://code.i-harness.com/ja/q/129f2c4



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