安装psycopg2报错Error: pg_config executable not found.
在ubuntu20.04中安装psycopg2模块时有如下报错:ERROR:Commanderroredoutwithexitstatus1:command:/usr/bin/python3-c'importsys,setuptools,tokenize;sys.argv[0]='"'"'/tmp/pip-install-58o5cccu/psycopg2/setup.py'"'"';__file