pip install pandas ERROR

[liliyana]

This could be network(firewall ect..) problem or access problem to PyPi problem.

python -m pip install --trusted-host pypi.python.org --trusted-host files.pythonhosted.org --trusted-host pypi.org --upgrade pip

Try install after upgrade pip.
Install directly would be.

pip install --trusted-host=pypi.org --trusted-host=files.pythonhosted.org pandas

Proxy example for bypass firewall.

python.exe -m pip install pandas --proxy="proxy.com:8080"

After I install pandas
C:\Users\sara\AppData\Local\Programs\Python\Python38>python.exe -m pip install pandas --proxy="proxy.com:8080"
Requirement already satisfied: pandas in c:\users\sara\appdata\local\programs\python\python38\lib\site-packages (1.0.3)
Requirement already satisfied: pytz>=2017.2 in c:\users\sara\appdata\local\programs\python\python38\lib\site-packages (from pandas) (2019.3)
Requirement already satisfied: numpy>=1.13.3 in c:\users\sara\appdata\local\programs\python\python38\lib\site-packages (from pandas) (1.18.1)
Requirement already satisfied: python-dateutil>=2.6.1 in c:\users\sara\appdata\local\programs\python\python38\lib\site-packages (from pandas) (2.8.1)
Requirement already satisfied: six>=1.5 in c:\users\sara\appdata\local\programs\python\python38\lib\site-packages (from python-dateutil>=2.6.1->pandas) (1.14.0)

but I still have the same error when run .py program