tell me the best way to use psycopg2 cursors in a thread?

Each thread should have its own database connection.

A PostgreSQL connection can handle only one statement at a given time (unless you are using a server side cursor, but even then the connection can handle only one FETCH at the same time).

So if several threads were to share a database connection, they’d have to coordinate carefully to make sure that only one thread uses the connection at the same time. For example, you cannot send a new query while another thread is still waiting for a query result.

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