Proplem on installation

[brl1999]

Hi. I met a problem after the installation. The pip list suggests that I've installed the pymatgen 2020.8.9 sucessfully, but when I tried the basic code from mp_api.client import MPRester , it turned out with the error:
`ImportError Traceback (most recent call last)
Cell In[3], line 1
----> 1 from mp_api.client import MPRester

File ~.conda\envs\env\lib\site-packages\mp_api\client_init_.py:8
5 from importlib.metadata import PackageNotFoundError, version
7 from .core import MPRestError
----> 8 from .mprester import MPRester
10 try:
11 version = version("mp_api")

File ~.conda\envs\env\lib\site-packages\mp_api\client\mprester.py:11
8 from json import loads
9 from typing import Literal
---> 11 from emmet.core.electronic_structure import BSPathType
12 from emmet.core.mpid import MPID
13 from emmet.core.settings import EmmetSettings

File ~.conda\envs\env\lib\site-packages\emmet\core\electronic_structure.py:26
23 from pymatgen.symmetry.bandstructure import HighSymmKpath
24 from typing_extensions import Literal
---> 26 from emmet.core.material_property import PropertyDoc
27 from emmet.core.mpid import MPID
28 from emmet.core.settings import EmmetSettings

File ~.conda\envs\env\lib\site-packages\emmet\core\material_property.py:10
7 from pymatgen.core import Structure
8 from datetime import datetime
---> 10 from emmet.core.material import PropertyOrigin
11 from emmet.core.mpid import MPID
12 from emmet.core.structure import StructureMetadata

File ~.conda\envs\env\lib\site-packages\emmet\core\material.py:13
10 from pymatgen.core.structure import Molecule
12 from emmet.core.mpid import MPID, MPculeID
---> 13 from emmet.core.structure import MoleculeMetadata, StructureMetadata
14 from emmet.core.vasp.validation import DeprecationMessage
15 from emmet.core.common import convert_datetime

File ~.conda\envs\env\lib\site-packages\emmet\core\structure.py:13
11 from emmet.core.utils import get_graph_hash
12 from emmet.core.base import EmmetBaseModel
---> 13 from emmet.core.symmetry import PointGroupData, SymmetryData
15 T = TypeVar("T", bound="StructureMetadata")
16 S = TypeVar("S", bound="MoleculeMetadata")

File ~.conda\envs\env\lib\site-packages\emmet\core\symmetry.py:6
4 from pymatgen.core import Structure
5 from pymatgen.core.structure import Molecule
----> 6 from pymatgen.symmetry.analyzer import (
7 PointGroupAnalyzer,
8 SpacegroupAnalyzer,
9 spglib,
10 SymmetryUndeterminedError,
11 )
13 from emmet.core.settings import EmmetSettings
14 from emmet.core.utils import ValueEnum

ImportError: cannot import name 'SymmetryUndeterminedError' from 'pymatgen.symmetry.analyzer' (C:\Users\brl1999.conda\envs\env\lib\site-packages\pymatgen\symmetry\analyzer.py)`
My python edition is 3.9. I wonder how to fix the problem. Thanks for the suggestions.

[JaGeo]

Python 3.9 is not supported by pymatgen anymore. Please switch to Python 3.10 and repeat the installation. Thank you 😀.

[brl1999]

Thank you very much! The problem has been solved.

[amkrajewski]

I've run into a similar issue when installing pymatgen alongside other tools in Python 3.11 and 3.12.

@JaGeo It appears that emmet is currently underspecifying its dependency on pymatgen. It requires >=2024.6.10 while this "linting" commit changing name from SymmetryUndetermined to SymmetryUndeterminedError is expected to be present; thus, dependency should be pymatgen>=2024.9.10.

@brl1999 If you need to use Python 3.9 for some reason, try pip install emmet-core==0.84.0.

[brl1999]

Thank you very much! The problem has been solved.