我最近买了一台 MacBook Pro 并为其设置了一些 python 和 Django 编程，但最终在安装 psycopg2 时遇到了问题，我已经尝试了几件事，但没有一个对我有用，这里留下了错误，
\nCollecting psycopg2\n Using cached psycopg2-2.9.3.tar.gz (380 kB)\n Preparing metadata (setup.py) ... error\n error: subprocess-exited-with-error\n \n \xc3\x97 python setup.py egg_info did not run successfully.\n \xe2\x94\x82 exit code: 1\n \xe2\x95\xb0\xe2\x94\x80> [23 lines of output]\n running egg_info\n creating /private/var/folders/7f/ssr40bmj6t3_yq0cv_43cttc0000gn/T/pip-pip-egg-info-noe7l09b/psycopg2.egg-info\n writing /private/var/folders/7f/ssr40bmj6t3_yq0cv_43cttc0000gn/T/pip-pip-egg-info-noe7l09b/psycopg2.egg-info/PKG-INFO\n writing dependency_links to /private/var/folders/7f/ssr40bmj6t3_yq0cv_43cttc0000gn/T/pip-pip-egg-info-noe7l09b/psycopg2.egg-info/dependency_links.txt\n writing top-level names to /private/var/folders/7f/ssr40bmj6t3_yq0cv_43cttc0000gn/T/pip-pip-egg-info-noe7l09b/psycopg2.egg-info/top_level.txt\n writing manifest file '/private/var/folders/7f/ssr40bmj6t3_yq0cv_43cttc0000gn/T/pip-pip-egg-info-noe7l09b/psycopg2.egg-info/SOURCES.txt'\n \n Error: pg_config executable not found.\n \n pg_config is required to build psycopg2 from source. Please add the …