无法在 Mac 12.3 上安装 psycopg2，我不断收到此错误

Question

IVE最近购买了MacBook Pro，并正在为一些Python和Django编程进行设置，但是我最终在安装Psycopg2时遇到了问题，我已经尝试过几件事，这些事情都对我有用，在这里留下了错误，

Collecting psycopg2
  Using cached psycopg2-2.9.3.tar.gz (380 kB)
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error
  
  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [23 lines of output]
      running egg_info
      creating /private/var/folders/7f/ssr40bmj6t3_yq0cv_43cttc0000gn/T/pip-pip-egg-info-noe7l09b/psycopg2.egg-info
      writing /private/var/folders/7f/ssr40bmj6t3_yq0cv_43cttc0000gn/T/pip-pip-egg-info-noe7l09b/psycopg2.egg-info/PKG-INFO
      writing dependency_links to /private/var/folders/7f/ssr40bmj6t3_yq0cv_43cttc0000gn/T/pip-pip-egg-info-noe7l09b/psycopg2.egg-info/dependency_links.txt
      writing top-level names to /private/var/folders/7f/ssr40bmj6t3_yq0cv_43cttc0000gn/T/pip-pip-egg-info-noe7l09b/psycopg2.egg-info/top_level.txt
      writing manifest file '/private/var/folders/7f/ssr40bmj6t3_yq0cv_43cttc0000gn/T/pip-pip-egg-info-noe7l09b/psycopg2.egg-info/SOURCES.txt'
      
      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.
      
      For further information please check the 'doc/src/install.rst' file (also at
      <https://www.psycopg.org/docs/install.html>).
      
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

这表明它是pip不是问题，而是setup.py，但找不到任何东西，

任何帮助都会受到

欢迎

Answer 1

正如亚历克斯（Alex
安装PostgreSQL，都可以正常工作
尝试一下

❯ brew install postgresql
# If you open a new terminal tab you will see that pg_config is available
❯ export CPPFLAGS="-I/opt/homebrew/opt/[email protected]/include"
❯ export LDFLAGS="-L/opt/homebrew/opt/[email protected]/lib -L${HOME}/.pyenv/versions/3.8.10/lib"
❯ python -V
Python 3.9.13
❯ pip install psycopg2-binary==2.8.6```

Answer 2

尝试使用以下命令：

pip3 install psycopg2-binary

Answer 3

迟到了，但是我只是遇到了这个问题，我发现什么都没有解决。我试图在新的Mac上安装一个正在进行的项目。最终，我记得这是一个PostgreSQL软件包，但我还没有安装PostgreSQL。一旦我安装了PostgreSQL并尝试再次安装Psycopg2，它就可以正常工作而没有错误。