我正在使用Virtualenv进行Django项目，并将其连接到本地postgres数据库。
ImportError: No module named psycopg2.extensions
然后我用这个命令安装
pip install psycopg2
然后在安装过程中，它会出现以下错误。
Downloading/unpacking psycopg2==2.4.4
Downloading psycopg2-2.4.4.tar.gz (648kB): 648kB downloaded
Running setup.py (path:/home/muhammadtaqi/Projects/MyProjects/OnlineElectionCampaign/venv/build/psycopg2/setup.py) egg_info for package psycopg2
Error: You need to install postgresql-server-dev-X.Y for building a server-side extension or libpq-dev for building a client-side application.
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: You need to install postgresql-server-dev-X.Y for building a server-side extension or libpq-dev for building a client-side application.
----------------------------------------
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /home/muhammadtaqi/Projects/MyProjects/OnlineElectionCampaign/venv/build/psycopg2
Storing debug log for failure in /home/muhammadtaqi/.pip/pip.log
使用以下命令，这将解决错误：
sudo apt-get install postgresql
然后开火：
sudo apt-get install python-psycopg2
和最后：
sudo apt-get install libpq-dev
我只是从终端以root身份运行此命令，问题就解决了，
sudo apt-get install -y postgis postgresql-9.3-postgis-2.1
pip install psycopg2
或
sudo apt-get install libpq-dev python-dev
pip install psycopg2
只需安装libpq-dev
$ sudo apt-get install libpq-dev
