Python, Error while installing matplotlib

OS: Windows 10

Python ver: 3.9.0

Error code:

ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output. 

I tried:

python -m pip install -U pip
python -m pip install -U matplotlib

didn’t work.

and then I tried:

pip install --upgrade setuptools

didn’t solve the problem.

I read on SO that maybe if I open the shell in administrator mode it could solve the problem but it didn’t work too.

I saw someone mentioning ez-setup for this error code. I installed it but that didn’t work too.

I don’t know if it has something to do but my C directory looks like this:

C:\Users\METİNUSTA

It has an uppercase i character which sometimes can cause problems with applications. I can’t change it because I am using my school’s Windows key and it don’t let me do any change. Because of this I installed python on D: .

Also here my pip list for extra information:

ez-setup    0.9
flake8      3.8.4
mccabe      0.6.1
pip         20.2.4
pycodestyle 2.6.0
pyflakes    2.2.0
setuptools  50.3.2
wheel       0.35.1

and finally whole error log that I get on windows powershell: