CentOS7安装psycopg2-binary提示pg_config可执行文件找不到如何解决

问题场景 #

在预装了PostgreSQL 12的CentOS 7系统的Django项目虚拟环境中，执行pip3 install psycopg2-binary安装依赖时出现如下报错：

Error: pg_config executable not found.

pg_config is required to build psycopg2 from source.  Please add the directory
containing pg_config to the $PATH or specify the full executable path with the
option:

    python setup.py build_ext --pg-config /path/to/pg_config build ...

or with the pg_config option in 'setup.cfg'.

If you prefer to avoid building psycopg2 from source, please install the PyPI
'psycopg2-binary' package instead.

已尝试的无效操作 #

• 安装系统层面依赖包：python3-devel、postgresql-libs、postgresql-server、postgresql-devel、postgresql-contrib
• 执行pip3 install psycopg2、pip install psycopg2命令安装
  以上操作完成后仍出现相同报错。

最终解决方案 #

升级pip版本即可解决，执行命令：

pip install --upgrade pip

内容的提问来源于stack exchange，提问作者thunderlion