我正在使用virtualenv,我需要安装“psycopg2”。

我做了以下几点:

pip install http://pypi.python.org/packages/source/p/psycopg2/psycopg2-2.4.tar.gz#md5=24f4368e2cfdc1a2b03282ddda814160

我有以下信息:

Downloading/unpacking http://pypi.python.org/packages/source/p/psycopg2/psycopg2
-2.4.tar.gz#md5=24f4368e2cfdc1a2b03282ddda814160
  Downloading psycopg2-2.4.tar.gz (607Kb): 607Kb downloaded
  Running setup.py egg_info for package from http://pypi.python.org/packages/sou
rce/p/psycopg2/psycopg2-2.4.tar.gz#md5=24f4368e2cfdc1a2b03282ddda814160
    Error: pg_config executable not found.

    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'.
    Complete output from command python setup.py egg_info:
    running egg_info

creating pip-egg-info\psycopg2.egg-info

writing pip-egg-info\psycopg2.egg-info\PKG-INFO

writing top-level names to pip-egg-info\psycopg2.egg-info\top_level.txt

writing dependency_links to pip-egg-info\psycopg2.egg-info\dependency_links.txt

writing manifest file 'pip-egg-info\psycopg2.egg-info\SOURCES.txt'

warning: manifest_maker: standard file '-c' not found

Error: pg_config executable not found.



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'.

----------------------------------------
Command python setup.py egg_info failed with error code 1
Storing complete log in C:\Documents and Settings\anlopes\Application Data\pip\p
ip.log

我的问题是,我只需要这样做来让psycopg2工作?

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

当前回答

在到达Debian / Ubuntu:

首先安装和构建psycopg2包的依赖项:

# apt-get build-dep python-psycopg2

然后在虚拟环境中编译并安装psycopg2模块:

(env)$ pip install psycopg2

其他回答

除了安装所需的包,我还需要手动将PostgreSQL bin目录添加到PATH中。 美元vi ~ / . bash_profile Add PATH=/usr/pgsql-9.2/bin:$PATH before export PATH。 $源~ / . bash_profile $pip安装psycopg2

在Arch基础分布中:

sudo pacman -S python-psycopg2
pip2 install psycopg2  # Use pip or pip3 to python3

对于低级Windows用户来说,必须从下面的链接安装psycopg2,只需将其安装到您已安装的Python安装程序中即可。它将把名为“psycopg2”的文件夹放在python安装的site-packages文件夹中。

之后,只需将该文件夹复制到virtualenv的site-packages目录,就不会有问题了。

下面是安装psycopg2的可执行文件的链接

http://www.lfd.uci.edu/~gohlke/pythonlibs/

我只在Python2中遇到过这个错误。我立即将虚拟环境升级到Python3.8,错误就不再存在了。

在windows上,这就是它的工作原理 在虚拟环境中通过pip安装flask后,在命令提示符上运行此命令

>pip install psycopg2

检查这个