You're encountering an error: "No module named psycopg2.extensions."

This error typically occurs when the required module 'psycopg2' or its extensions are not installed in your Python environment.

To resolve this issue, you can follow these steps:

  1. First, ensure that you have installed the 'psycopg2' library in your Python environment using a package manager like pip.
  2. If you haven't installed 'psycopg2' yet, you can do so by running: pip install psycopg2 in your terminal or command prompt.
  3. Check if the 'psycopg2' library is installed in the correct Python environment. Sometimes, the module might be installed in a different environment if you are using virtual environments.
  4. If you are using virtual environments, make sure that you have activated the correct environment before installing or using the 'psycopg2' library.
  5. If 'psycopg2' is already installed, ensure that you are importing the correct modules in your Python code. The 'extensions' module should be imported as: import psycopg2.extensions.
  6. If the error persists even after installing 'psycopg2' and importing the correct modules, consider reinstalling 'psycopg2' to ensure that all necessary components are properly installed.
  7. If you are still facing issues, double-check your Python environment setup and verify that all dependencies are correctly installed and accessible.

To resolve the issue, you can run the following commands:

sudo apt-get build-dep python-psycopg2
sudo apt install python3-psycopg2 # Python 3

After that, go inside your virtual environment and use:

pip install psycopg2-binary

These two commands should work for you

You can try using these commands:

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

If your Python was installed from the Ubuntu installer, you can follow these steps:

  1. In the terminal, run:
  2. sudo synaptic
  3. In Synaptic, use the search field to find:
  4. psycopg2
  5. Choose python-psycopg2 and mark it for installation using the right-click menu, then push 'apply'.
  6. If you don't have Synaptic installed, you can do so first by running:
  7. sudo apt-get install synaptic
The error "ModuleNotFoundError: No module named 'psycopg2'" indicates that Django is unable to find the psycopg2 module, which is required for PostgreSQL database connectivity. To resolve this issue, you can follow these steps: Ensure psycopg2 is installed in your environment. You can install it using pip: pip install psycopg2 If you're deploying your Django app in a virtual environment, make sure you've activated the virtual environment before installing psycopg2. If you're deploying your Django app on a server or platform that uses containers (e.g., Heroku), make sure psycopg2 is included in your requirements.txt file. You can add it manually or ensure it's included in your dependencies list. After installing psycopg2, redeploy your Django app to ensure the changes take effect. If you've already tried these steps and are still encountering the error, please provide more details about your deployment environment and any additional error messages you're seeing for further assistance.