Does `psycopg2` in Python 2.x block the GIL

Question

I'm trying to settle an argument with a coworker. Say that I have a Python 2.6 app that uses psycopg2 to communicate with a Postgres database. The app is multithreaded. When a thread makes a database call using psycopg2, does it release the GIL so other threads could also make a database call?

Answer 1

From a quick glance at the Psycopg release notes, there are many references to releasing the GIL. So apparently it tries to release the GIL when appropriate. You didn't ask about a specific scenario, so I don't think a more specific answer is possible.