pip installs cannot import DensityFeatures

[ardunn]

from matminer.featurizers.structure import DensityFeatures
​
densityf = DensityFeatures()
densityf.feature_labels()
TypeError Traceback (most recent call last)
in
----> 1 from matminer.featurizers.structure import DensityFeatures
2
3 densityf = DensityFeatures()
4 densityf.feature_labels()

/data/miniconda/envs/matminer/lib/python3.8/site-packages/matminer/featurizers/structure.py in
32
33 from matminer.featurizers.base import BaseFeaturizer
—> 34 from matminer.featurizers.site import OPSiteFingerprint,
35 CoordinationNumber, LocalPropertyDifference, CrystalNNFingerprint,
36 AverageBondAngle, AverageBondLength

/data/miniconda/envs/matminer/lib/python3.8/site-packages/matminer/featurizers/site.py in
63
64 cn_motif_op_params = {}
—> 65 with open(os.path.join(os.path.dirname(
66 pymatgen.analysis.file), ‘cn_opt_params.yaml’), ‘r’) as f:
67 cn_motif_op_params = yaml.safe_load(f)

/data/miniconda/envs/matminer/lib/python3.8/posixpath.py in dirname(p)
150 def dirname(p):
151 “”“Returns the directory component of a pathname”""
→ 152 p = os.fspath(p)
153 sep = _get_sep(p)
154 i = p.rfind(sep) + 1

TypeError: expected str, bytes or os.PathLike object, not NoneType

From https://matsci.org/t/strange-error-in-densityfeatures-import/36274

[ardunn]

this is resolved now, was a previous problem with pymatgen