Question

我在我的centos 6.5中安装了python 3.4 我按照本教程

http://toomuchdata.com/2014/02/16/how-to-install-python-on-centos/

所以我不改变系统defaule python 2.6.6

我使用python3.4 pyvenv为我的django网站创建一个项目文件夹现在我需要安装postgresql数据库，所以我尝试安装psycopg2。在那个pyvenv中，python版本是3.4

当我pip安装psycopg2时，它显示错误

Downloading psycopg2-2.5.2.tar.gz (685kB): 685kB downloaded
  Running setup.py (path:/mysns/build/psycopg2/setup.py) egg_info for package psycopg2

    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'.

----------------------------------------
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /mysns/build/psycopg2
Storing debug log for failure in /root/.pip/pip.log

然后我做了一点搜索，有人说我需要安装其他的lib 我需要这样做

yum install libpqxx-devel python-devel

每件事都安装完成然而，然后我安装psycopg2， pip安装psycopg2，它仍然显示相同的错误然后我注意到，前一个lib，只有intall python-devel-2.6.6 这是默认的系统python版本即便我尝试

yum python3-devel，

它没有将python3.4 devel lib安装到我的python3.4 pyvenv文件夹

我该如何解决这个问题？我可以在这个pyvenv文件夹中安装python3.4 devel lib吗？

Answer 1

我遇到了同样的问题，我环顾四周，发现了以下使其成功的软件包：

wget https://forensics.cert.org/cert-forensics-tools-release-el7.rpm
sudo rpm -Uvh cert-forensics-tools-release*rpm
sudo yum --enablerepo=forensics install python3-psycopg2

我也发现有一个名为python33-python-psycopg2的软件包可以帮助你，但我没有尝试过，所以把它当作一个不稳定的机会，不管怎么说，无论如何http://developerblog.redhat.com/2013/06/24/using-rhscl-django-on-python-3-with-postgresql/你可以找到解释。

Answer 2

python3.4 -m pip install psycopg2

如何在centos pyvenv中安装python3.4 psycopg2

2 个答案: