python - mac - psycopg2 install ubuntu




How to install psycopg2 with “pip” on Python? (18)

Besides installing the required packages, I also needed to manually add PostgreSQL bin directory to PATH.
$vi ~/.bash_profile
Add PATH=/usr/pgsql-9.2/bin:$PATH before export PATH.
$source ~/.bash_profile
$pip install psycopg2

I'm using virtualenv and I need to install "psycopg2".

I have done the following:

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

And I have the following messages:

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

My question, I only need to do this to get the psycopg2 working?

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

For Python 3 you should use sudo apt-get install libpq-dev python3-dev under Debian.


I could install it in a windows machine and using Anaconda/Spyder with python 2.7 through the following commands:

 !pip install psycopg2

Then to establish the connection to the database:

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

I found this post searching for a Linux solution to this problem.

This post by "goshawk" gave me the solution: run sudo apt-get install libpq-dev python-dev if you are on Ubuntu/Debian.

Update

Since more people have found this answer useful and posted their own solutions, here's a list of them:

Debian/Ubuntu

Python 2

sudo apt install libpq-dev python-dev

Python 3

sudo apt install libpq-dev python3-dev

Additional

If none of the above solve your issue, try

sudo apt install build-essential

or

sudo apt install postgresql-server-dev-all

I recently configured psycopg2 on a windows machine. The easiest install is using a windows executable binary. You can find it at http://stickpeople.com/projects/python/win-psycopg/.

To install the native binary in a virtual envrionment, use easy_install:

C:\virtualenv\Scripts\> activate.bat
(virtualenv) C:\virtualenv\Scripts\> easy_install psycopg2-2.5.win32-py2.7-pg9.2.4-release.exe

I've been battling with this for days, and have finally figured out how to get the "pip install psycopg2" command to run in a virtualenv in Windows (running Cygwin).

I was hitting the "pg_config executable not found." error, but I had already downloaded and installed postgres in Windows. It installed in Cygwin as well; running "which pg_config" in Cygwin gave "/usr/bin/pg_config", and running "pg_config" gave sane output -- however the version installed with Cygwin is:

VERSION = PostgreSQL 8.2.11

This won't work with the current version of psycopg2, which appears to require at least 9.1. When I added "c:\Program Files\PostgreSQL\9.2\bin" to my Windows path, the Cygwin pip installer was able to find the correct version of PostgreSQL, and I was able to successfully install the module using pip. (This is probably preferable to using the Cygwin version of PostgreSQL anyway, as the native version will run much quicker).


If you using Mac OS, you should install PostgreSQL from source. After installation is finished, you need to add this path using:

export PATH=/local/pgsql/bin:$PATH

or you can append the path like this:

export PATH=.../:usr/local/pgsql/bin

in your .profile file or .zshrc file.

This maybe vary by operating system.

You can follow the installation process from http://www.thegeekstuff.com/2009/04/linux-postgresql-install-and-configure-from-source/


In Arch base distributions:

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

On CentOS, you need the postgres dev packages:

sudo yum install python-devel postgresql-devel

That was the solution on CentOS 6 at least.


On Fedora 24: For Python 3.x

sudo dnf install postgresql-devel python3-devel

sudo dnf install redhat-rpm-config

Activate your Virtual Environment:

pip install psycopg2

On OSX 10.11.6 (El Capitan)

brew install postgresql
PATH=$PATH:/Library/PostgreSQL/9.4/bin pip install psycopg2

On OSX with macports:

sudo port install postgresql96
export PATH=/opt/local/lib/postgresql96/bin:$PATH

On Ubuntu I just needed the postgres dev package:

sudo apt-get install postgresql-server-dev-all

*Tested in a virtualenv


On windows XP you get this error if postgres is not installed ...


The answers so far are too much like magic recipes. The error that you received tells you that pip cannot find a needed part of the PostgreSQL Query library. Possibly this is because you have it installed in a non-standard place for your OS which is why the message suggests using the --pg-config option.

But a more common reason is that you don't have libpq installed at all. This commonly happens on machines where you do NOT have PostgreSQL server installed because you only want to run client apps, not the server itself. Each OS/distro is different, for instance on Debian/Ubuntu you need to install libpq-dev. This allows you to compile and link code against the PostgreSQL Query library.

Most of the answers also suggest installing a Python dev library. Be careful. If you are only using the default Python installed by your distro, that will work, but if you have a newer version, it could cause problems. If you have built Python on this machine then you already have the dev libraries needed for compiling C/C++ libraries to interface with Python. As long as you are using the correct pip version, the one installed in the same bin folder as the python binary, then you are all set. No need to install the old version.


This is what worked for me (On RHEL, CentOS:

sudo yum install postgresql postgresql-devel python-devel

And now include the path to your postgresql binary dir with you pip install:

sudo PATH=$PATH:/usr/pgsql-9.3/bin/ pip install psycopg2

Make sure to include the correct path. Thats all :)

UPDATE: For python 3, please install python3-devel instead of python-devel







pip