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Constants cannot be pickled

See original GitHub issue

$ python
Python 3.7.3 (default, Jun 20 2019, 09:05:27) 
[GCC 7.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import astropy
>>> astropy.__version__
'3.2.1'
>>> from astropy.constants import GM_sun
>>> import pickle
>>> pickle.loads(pickle.dumps(GM_sun))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/juanlu/.pyenv/versions/poliastro37/lib/python3.7/site-packages/astropy/constants/constant.py", line 37, in wrapper
    name_lower = self.name.lower()
AttributeError: 'NoneType' object has no attribute 'lower'

Issue Analytics

State:
Created 4 years ago
Comments:10 (10 by maintainers)

Top GitHub Comments

1reaction

astrojuanlucommented, Aug 20, 2019

is everyone okay with closing this one

Sure, I agree with going on with the conversation on the original one

1reaction

stargasercommented, Aug 19, 2019

All I can say for right now is that #5719 notes that all the pickle tests on constants are set to xfail and that this is something we should investigate. At least that tells us that the inability to pickle constants is not a new thing. I am unsure whether this should be considered a bug or a feature.

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