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

The first thing to do is to install the dependencies.

sudo apt-get build-dep python-psycopg2

After that go inside your virtualenv and use

pip install psycopg2-binary

These two commands should solve the problem.

Answer 2

pip install psycopg2-binary

The psycopg2 wheel package will be renamed from release 2.8; in order to keep installing from binary please use "pip install psycopg2-binary" instead. For details see: http://initd.org/psycopg/docs/install.html#binary-install-from-pypi.

Answer 3

Check if you have installed psycopg2 if not

sudo apt-get install psycopg2

Install the dependencies.

sudo apt-get build-dep python-psycopg2

These two commands should solve the problem.

Answer 4

For Django 2 and python 3 install psycopg2 using pip3 :

pip3 install psycopg2

Answer 5

I installed it successfully using these commands:

sudo apt-get install libpq-dev python-dev
pip install psycopg2

Answer 6

On Alpine Linux (majority of the docker containers) do:

apk add postgresql-dev

Then:

pip install psycopg2-binary