No module named pathlib on install about anndata HOT 6 CLOSED

Ha, of course they do! A >10 year migration period should have been plenty for even the most glacial company.

Whoever is still invested in 2.7 by 2020 had it coming for a loooong time and their users should switch to a competitor.

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Or perhaps AnnData doesn't support Python2, in which case setup.py should complain about my Python version, since after that I get another error:

    import anndata
  File "C:\Python27\lib\site-packages\anndata\__init__.py", line 1, in <module>
    from .base import AnnData, _MAIN_NARRATIVE
  File "C:\Python27\lib\site-packages\anndata\base.py", line 66
    def __new__(cls, input_array: np.ndarray, parent: Any, attr: str):
                                ^
SyntaxError: invalid syntax

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Yup, we only support somehow recent python versions!

FYI: 2.7 is really old, deprecated and its end-of-life is 2020-01-01! https://pythonclock.org

Many important projects will end support then or before then, so starting anything in Python 2 today is a bad idea: http://python3statement.org/

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Thanks for the fix @flying-sheep. I'm only using Python2 to run tests to make sure my code is backwards compatible, something I've committed to do until pandas drops support next January.

Thanks for the quick response!

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That’s very laudable! Sorry if I came over preachy, it’s just that I still meet some people who are surprised that Python 2.7 is about to die 😄

from anndata.

Not a problem :) A lot of users (hopefully not devs) are still using Python 2.7 though - hopefully the great python gods have a plan of how to migrate everyone across.

from anndata.