ImportError: "No modules named". But modules already installed in dist-packages

Question

I am using python2.7 and trying to import modules such as psycopg2. But I get the following error when I try to import the module:

import psycopg2
ImportError: No module named psycopg2

When I try pip to install the module it gives me the following message:

Requirement already satisfied (use --upgrade to upgrade): psycopg2 in /usr/local/lib/python2.7/dist-packages
Cleaning up...

Can anyone please tell me what I am doing wrong?

Answer 1

Is the module installed in your PYTHONPATH?

You can verify running this command line:

python -c "import sys; print '/usr/local/lib/python2.7/dist-packages' in sys.path"