Python Error

[Mayukh Chakraborty]

 Thanks - I am able to launch 'py' from the command prompt and it gives me the python versions installed in my machine from python.org website.
However, when I am trying to execute a python program from command prompt, I am getting the error below. I had reinstalled python packages (numpy, pandas) but it didn't resolve the issue. Any help would be appreciated.
Original error was: No module named 'numpy.core._multiarray_umath'

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C:\Users\mchak\Documents\Python>py ES.pyTraceback (most recent call last):  File "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\__init__.py", line 22, in <module>    from . import multiarray  File "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\multiarray.py", line 12, in <module>    from . import overrides  File "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\overrides.py", line 7, in <module>    from numpy.core._multiarray_umath import (ModuleNotFoundError: No module named 'numpy.core._multiarray_umath'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):  File "C:\Users\mchak\Documents\Python\ES.py", line 1, in <module>    import scipy as sp  File "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\scipy\__init__.py", line 61, in <module>    from numpy import show_config as show_numpy_config  File "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\__init__.py", line 140, in <module>    from . import core  File "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\__init__.py", line 48, in <module>    raise ImportError(msg)ImportError:
IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!
Importing the numpy C-extensions failed. This error can happen formany reasons, often due to issues with your setup or how NumPy wasinstalled.
We have compiled some common reasons and troubleshooting tips at:
    https://numpy.org/devdocs/user/troubleshooting-importerror.html
Please note and check the following:
  * The Python version is: Python3.9 from "C:\Users\mchak\AppData\Local\Programs\Python\Python39\python.exe"  * The NumPy version is: "1.19.4"
and make sure that they are the versions you expect.Please carefully study the documentation linked above for further help.
Original error was: No module named 'numpy.core._multiarray_umath'

    On Tuesday, November 24, 2020, 07:13:04 AM GMT, Gisle Vanem <gisle.vanem at gmail.com> wrote:  
 
 Barry Scott wrote:

> If you have python from python.org installed you should be able to list all the version you have installed
> with the command:
> 
>    py -0
When was that '-0' feature added?
I have Python 3.6 from Python.org and here a
'py.exe -0' gives:
  Requested Python version (0) not installed

But using 'py.exe -0' from Python 3.9 correctly
gives:
  -3.6-32 *
  -2.7-32

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