Can't pickle the result of `country_holidays`

[Mr-Geekman]

Currently, on Linux it isn't possible to pickle the result of calling country_holidays.

Code to reproduce:

import pickle
import holidays


def main():
    jp_holidays = holidays.country_holidays("JP")
    result = pickle.dumps(jp_holidays)


if __name__ == "__main__":
    main()

The error: _pickle.PicklingError: Can't pickle <function func at 0x7f9098a8dd30>: attribute lookup func on __main__ failed.

It fails not on all countries. For example, it works for US and UK.

The error starts from version 0.22 (on 0.22 it is slightly different).

The problem can be fixed by using dill, but may be it is possible to adjust the code to work with native pickle.

[arkid15r]

Thanks for reporting this. I guess i18n related code might be the culprit. I suggest using the workaround you found until the issue is fixed.

Sorry for the inconvenience.

[KJhellico]

@Mr-Geekman On current beta 0.26 that code produce no error, so I would advise you to wait for next release and check with it. The release is planned for early June.

[arkid15r]

@Mr-Geekman On current beta 0.26 that code produce no error, so I would advise you to wait for next release and check with it. The release is planned for early June.

Hmmm, can't confirm that after a brief look...

[KJhellico]

Yes, it seems pickle can't process holidays with language other than default. :-(