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Arch基础分布中:

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

其他回答

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

对于fedora用户:

Libpq-dev是依赖项之一,但是,在安装中应该这样命名这个包:libpq-devel

所以这应该解决了Fedora的问题:

sudo yum install libpq-devel

在macOS Mojave上,请确保您在最新更新的命令行工具10.3 -这对我有用-用软件更新更新了它,Mojave上的命令行工具的以前版本对我不起作用。

我可以在windows机器上安装它,并通过以下命令使用Anaconda/Spyder和python 2.7:

 !pip install psycopg2

然后建立到数据库的连接:

 import psycopg2
 conn = psycopg2.connect(dbname='dbname',host='host_name',port='port_number', user='user_name', password='password')

在windows XP上,如果postgres没有安装,你会得到这个错误…