erro with install psycopg2 on windows

Question

i get the down below error while i want to install psycopg2 with pip install on windows with python 3.9

ERROR: Command errored out with exit status 1:
command: 'C:\Users\mohammadmilad\Envs\test\Scripts\python.exe' -u -c    'import sys, setuptools, 

Answer 1

first step download a version of psycopg2 second step pip install pipwin then pipwin install psycopg2 and end