Python cannot pickle defaultdict

Describes the cause and action for error messages.


Error Message(English):
cannot pickle defaultdict

Resolution


関連リンク


Can't pickle defaultdict - Stack Overflow
https://stackoverflow.com/questions/16439301/cant-pickle-defaultdict

Error on Data Pickle in Python
https://stackoverflow.com/questions/39266080/error-on-data-pickle-in-python

How to pickle a defaultdict which uses a lambda function?
https://stackoverflow.com/questions/37929435/how-to-pickle-a-defaultdict-which-uses-a-lambda-functio・・・

pickling defaultdict with lambda
https://stackoverflow.com/questions/35603979/pickling-defaultdict-with-lambda

Pickling a dictionary that uses defaultdict
https://stackoverflow.com/questions/19704969/pickling-a-dictionary-that-uses-defaultdict

Python の defaultdict には注意しよう - luggage baggage
http://yoshidabenjiro.hatenablog.com/entry/2017/09/05/012828

Python defaultdict の使い方 - Qiita
https://qiita.com/xza/items/72a1b07fcf64d1f4bdb7

Problem: Pickle and collections.defaultdict with default_factory ...
https://bytes.com/topic/python/answers/785634-problem-pickle-collections-defaultdict-default_factory・・・

Saving a Python dict to a file using pickle - SaltyCrane Blog
https://www.saltycrane.com/blog/2008/01/saving-python-dict-to-file-using-pickle/

writing pickle function - python.org Mailing Lists
https://mail.python.org/pipermail/python-list/2009-January/521577.html



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