pcmdi_metrics v2.3

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[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[acordonez]

@lee1043 We need to check out this error in the linux testing:
import: 'pcmdi_metrics'
Traceback (most recent call last):
File "/home/conda/feedstock_root/build_artifacts/pcmdi_metrics_1654746400274/test_tmp/run_test.py", line 2, in
import pcmdi_metrics
File "/home/conda/feedstock_root/build_artifacts/pcmdi_metrics_1654746400274/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pl/lib/python3.10/site-packages/pcmdi_metrics/init.py", line 17, in
from . import io # noqa
File "/home/conda/feedstock_root/build_artifacts/pcmdi_metrics_1654746400274/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pl/lib/python3.10/site-packages/pcmdi_metrics/io/init.py", line 2, in
from . import base # noqa
File "/home/conda/feedstock_root/build_artifacts/pcmdi_metrics_1654746400274/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pl/lib/python3.10/site-packages/pcmdi_metrics/io/base.py", line 7, in
from collections import Mapping, OrderedDict
ImportError: cannot import name 'Mapping' from 'collections' (/home/conda/feedstock_root/build_artifacts/pcmdi_metrics_1654746400274/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pl/lib/python3.10/collections/init.py)

Based on some research (e.g. https://www.reddit.com/r/learnpython/comments/u3dibm/i_updated_all_my_python_modules_using_pip_and_now/), it looks like the "Mapping" library was moved to collections.abc in Python 3.3. I'm not sure why we haven't seen this error before. I am wondering if we need to update all the Mapping library calls in the PMP, or if it would work to pin an older Python version for this release (if you need it asap).

[acordonez]

@lee1043 Did some testing on my command line. I get the same error with the PMP 2.2.2 from conda-forge if I use the default Python version 3.10.4. Tested by creating a new environment and running "mean_climate_driver.py --help", which showed the ImportError.

If I create a new environment and force the Python version to be 3.7, this command works. It looks like the old collections library alias is available up through version 3.7 (reference).

If you need this release ASAP, we could pin Py>=3.6 and <3.8. Otherwise, it looks like we do need to eventually fix all the collections library calls to work with newer versions of Python.

[acordonez]

See my previous comments

[lee1043]

@acordonez thank you for the investigation. I see below message when I manually import Mapping from collections in python 3.9.7. It is saying it will stop working from python 3.10, which I think it is why we see the above error now.

(pcmdi_metrics_dev) bash-3.2$ python
Python 3.9.7 | packaged by conda-forge | (default, Sep 29 2021, 20:33:18) 
[Clang 11.1.0 ] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from collections import Mapping, OrderedDict
<stdin>:1: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.10 it will stop working

It looks like the Mapping function is only called in PMP's base.py. I am revising the base.py now. Once done, could you please check if the revised code working well in your python 3.10 env?

Correction: Found Mapping function was used in more than one place in PMP, and have revised them all in PCMDI/pcmdi_metrics#854