Collectives™ on Stack Overflow
Find centralized, trusted content and collaborate around the technologies you use most.
Learn more about Collectives
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Learn more about Teams
I am trying to set up a PostgreSQL database for my django project, which I believe I have done now thanks to the replies to my last question
Problems setting up a postgreSQL database for a django project
. I am now trying to run the command 'python manage.py runserver' in Terminal to get my localhost up but when I run the command, I see this response...
Error: No module named psycopg2.extensions
I'm not sure what this means - I have tried to download psycopg2 but can't seem to find a way to download psycopg2 using homebrew. I have tried easy_install, pip install and sudo but all return errors like this...
Downloading http://www.psycopg.org/psycopg/tarballs/PSYCOPG-2-4/psycopg2-2.4.5.tar.gz
Processing psycopg2-2.4.5.tar.gz
Writing /tmp/easy_install-l7Qi62/psycopg2-2.4.5/setup.cfg
Running psycopg2-2.4.5/setup.py -q bdist_egg --dist-dir /tmp/easy_install-l7Qi62/psycopg2-2.4.5/egg-dist-tmp-PBP5Ds
no previously-included directories found matching 'doc/src/_build'
unable to execute gcc-4.0: No such file or directory
error: Setup script exited with error: command 'gcc-4.0' failed with exit status 1
How to fix this?
–
–
The first thing to do is to install the dependencies.
sudo apt-get build-dep python-psycopg2
sudo apt install python3-psycopg2 # Python 3
After that go inside your virtualenv and use:
pip install psycopg2-binary
These two commands should solve the problem.
–
–
–
–
I installed it successfully using these commands:
sudo apt-get install libpq-dev python-dev
pip install psycopg2
This is what helped me on Ubuntu if your python installed from Ubuntu installer. I did this after unsuccessfully trying 'apt-get install' and 'pip install':
In terminal:
sudo synaptic
then in synaptic searchfield write
psycopg2
choose
python-psycopg2
mark it for installation using mouse right-click and push 'apply'. Of course, if you don't have installed synaptic, then first do:
sudo apt-get install synaptic
I ran into this same issues recently and this code worked.
sudo apt-get install libpq-dev python-dev-is-python3
pip3 install psycopg2
In python 3.4, while in a virtual environment, make sure you have the build dependencies first:
sudo apt-get build-dep python3-psycopg2
Then install it:
pip install psycopg2
pip3 install django-psycopg2-extension
I know i am late and there's lot of answers up here which also solves the problem. But today i also faced this problem and none of this helps me. Then i found the above magical command which solves my problem :-P . so i am posting this as it might be case for you too.
Happy coding.
–
–
It seems that you need gcc-4.0, and it would be helpful to specify your OS type and version.
Maybe this question will help you a bit: Installing GCC to Mac OS X Leopard without installing Xcode
Update
I'm a Windows user, so I can't test your setup, but a quick google pointed to some more links:
http://hardlifeofapo.com/psycopg2-and-postgresql-9-1-on-snow-leopard/
Cannot install psycopg2 on OSX 10.6.7 with XCode4
–
I encountered the No module named psycopg2.extensions error when trying to run pip2 install psycopg2 on a Mac running Mavericks (10.9). I don't think my stack trace included a message about gcc, and it also included a hint:
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'.
I looked for the pg_config file in my Postgres install and added the folder containing it to my path: /Applications/Postgres.app/Contents/Versions/9.4/bin. Your path may be different, especially if you have a different version of Postgres installed - I would just poke around until you find the bin/ folder. After doing this, the installation worked.
try this:
sudo pip install -i https://testpypi.python.org/pypi psycopg2==2.7b2
.. this is especially helpful if you're running into egg error
on aws ec2 instances if you run into gcc error; try this
1. sudo yum install gcc python-setuptools python-devel postgresql-devel
2. sudo su -
3. sudo pip install psycopg2
I had such problem when trying to run python script as a sudo, while psycopg2 was installed via pip3 to my own user's directory.
I managed to resolve the issue for myself removing pip3 version, and just installing it via apt:
pip3 uninstall psycopg2
sudo apt install python3-psycopg2
This error raise because you not install postgres database in you project virtutal environment. you should run one of these command.
from a terminal you can you command for sudo.
sudo apt-get install build-dep python-psycopg2
for pip (pip basically work for python)
pip install psycopg2
pip3 install psycopg2-binary
i'm pretty sure it will work for you.
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
