Numpy Import Error
_Pandas frequently errors about importing NumPy. When I try to import pandas, it tries to import NumPy and creates an error.
I don't know why but when I delete venv folder and create a new venv and install pandas again, it automatically resolves but after 3-4 days, it throws an error about importing NumPy. There isn't a problem with the NumPy version because I don't manually install NumPy or any package with NumPy dependency before installing pandas. Anyway, I don't use another package using Numpy.
If you know what is the problem, please reply._

I opened this issue 1 week ago but it has closed because I didn't have that error at the time and don't have a full traceback.
I had the same error again and now I have the full traceback.

```
Traceback (most recent call last):
File "/pathtomyproject/main.py", line 22, in
import pandas as pd
File "/pathtomyproject/venv/lib/python3.9/site-packages/pandas/init.py", line 16, in
raise ImportError(
ImportError: Unable to import required dependencies:
numpy:

IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!

Importing the numpy C-extensions failed. This error can happen for
many reasons, often due to issues with your setup or how NumPy was
installed.

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 "/pathtomyproject/venv/bin/python3"
    The NumPy version is: "1.20.2"

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'
```
I didn't install any other packages or updated anything in that venv during last week. And as I mentioned above, I didn't use any library which is NumPy dependent.