Error: No module named psycopg2.extensions

Question

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

Answer 1

first install apt-get install python-setuptools

then try easy_install psycopg2

Answer 2

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

Answer 3

I used the extension after only importing psycopg2:

import psycopg2

...

psycopg2.extensions.AsIs(anap[i])

Answer 4

you can install gcc for macos from https://github.com/kennethreitz/osx-gcc-installer
after instalation of gcc you'll be able to install psycopg with easy_install or with pip

Answer 5

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

Answer 6

For macOS Mojave just run pip install psycopg2-binary. Works fine for me, python version -> Python 3.7.2