Question: Earlier I installed some packages like Matplotlib, NumPy, pip (version 23.3.1), wheel (version 0.41.2), etc., and did some programming with those. I used the command C:\Users\UserName>pip list to find the list of packages that I have installed, and I am using Python 3.12.0 (by employing code C:\Users\UserName>py -V). I need to use pyspedas to analyse some data. I am following the instruction that that I received from site to install the package, with a variation (I am not sure whether it matters or not: I am using py, instead of python). The commands that I use, in the order, are: py -m venv pyspedas .\pyspedas\Scripts\activate pip install pyspedas  After the last step, I am getting the following output: Collecting pyspedas Using cached pyspedas-1.4.47-py3-none-any.whl.metadata (14 kB) Collecting numpy>=1.19.5 (from pyspedas) Using cached numpy-1.26.1-cp312-cp312-win_amd64.whl.metadata (61 kB) Collecting requests (from pyspedas) Using cached requests-2.31.0-py3-none-any.whl.metadata (4.6 kB) Collecting geopack>=1.0.10 (from pyspedas) Using cached geopack-1.0.10-py3-none-any.whl (114 kB) Collecting cdflib<1.0.0 (from pyspedas) Using cached cdflib-0.4.9-py3-none-any.whl (72 kB) Collecting cdasws>=1.7.24 (from pyspedas) Using cached cdasws-1.7.43.tar.gz (21 kB) Installing build dependencies ... done Getting requirements to build wheel ... done Preparing metadata (pyproject.toml) ... done Collecting netCDF4>=1.6.2 (from pyspedas) Using cached netCDF4-1.6.5-cp312-cp312-win_amd64.whl.metadata (1.8 kB) Collecting pywavelets (from pyspedas) Using cached PyWavelets-1.4.1.tar.gz (4.6 MB) Installing build dependencies ... done Getting requirements to build wheel ... error error: subprocess-exited-with-error × Getting requirements to build wheel did not run successfully. │ exit code: 1 ╰─> [33 lines of output] Traceback (most recent call last): File "C:\Users\UserName\pyspedas\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 353, in <module> main() File "C:\Users\UserName\pyspedas\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 335, in main json_out['return_val'] = hook(**hook_input['kwargs']) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\UserName\pyspedas\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 112, in get_requires_for_build_wheel backend = _build_backend() ^^^^^^^^^^^^^^^^ File "C:\Users\UserName\pyspedas\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 77, in _build_backend obj = import_module(mod_path) ^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\UserName\AppData\Local\Programs\Python\Python312\Lib\importlib\__init__.py", line 90, in import_module return _bootstrap._gcd_import(name[level:], package, level) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "<frozen importlib._bootstrap>", line 1381, in _gcd_import File "<frozen importlib._bootstrap>", line 1354, in _find_and_load File "<frozen importlib._bootstrap>", line 1304, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed File "<frozen importlib._bootstrap>", line 1381, in _gcd_import File "<frozen importlib._bootstrap>", line 1354, in _find_and_load File "<frozen importlib._bootstrap>", line 1325, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 929, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 994, in exec_module File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed File "C:\Users\UserName\AppData\Local\Temp\pip-build-env-_lgbq70y\overlay\Lib\site-packages\setuptools\__init__.py", line 16, in <module> import setuptools.version File "C:\Users\UserName\AppData\Local\Temp\pip-build-env-_lgbq70y\overlay\Lib\site-packages\setuptools\version.py", line 1, in <module> import pkg_resources File "C:\Users\UserName\AppData\Local\Temp\pip-build-env-_lgbq70y\overlay\Lib\site-packages\pkg_resources\__init__.py", line 2191, in <module> register_finder(pkgutil.ImpImporter, find_on_path) ^^^^^^^^^^^^^^^^^^^ AttributeError: module 'pkgutil' has no attribute 'ImpImporter'. Did you mean: 'zipimporter'? [end of output] note: This error originates from a subprocess, and is likely not a problem with pip. error: subprocess-exited-with-error × Getting requirements to build wheel did not run successfully. │ exit code: 1 ╰─> See above for output. note: This error originates from a subprocess, and is likely not a problem with pip.  After little bit of googling, I came to know that this issues was reported at multiple places, but none for this package. I did install wheel in the new environment as mentioned in the answer here, but the problem still persists. Instead of setting up a virtual environment, I simply executed the command py -m pip install pyspedas. But I am still getting the error. What I could gather is that the program has an issue with Collecting pywavelets (from pyspedas) Using cached PyWavelets-1.4.1.tar.gz (4.6 MB) Installing build dependencies ... done  I am using IDLE in Windows 11.

Answer: Due to the removal of the long-deprecated pkgutil.ImpImporter class, the pip command may not work for Python 3.12. You just have to manually install pip for Python 3.12 python -m ensurepip --upgrade python -m pip install --upgrade setuptools python -m pip install <module>  In your virtual environment: pip install --upgrade setuptools  Python comes with an ensurepip, which can install pip in a Python environment. https://pip.pypa.io/en/stable/installation/ On Linux/macOS terminal: python -m ensurepip --upgrade  On Windows: py -m ensurepip --upgrade  also, make sure to upgrade pip: py -m pip install --upgrade pip    To install numpy on Python 3.12, you must use numpy version 1.26.4 pip install numpy==1.26.4  https://github.com/numpy/numpy/issues/23808#issuecomment-1722440746   for Ubuntu sudo apt install python3.12-dev  or python3.12 -m pip install --upgrade setuptools