[DB-SIG] Typing / Protocol for DBAPI-compatible connections and cursors

[John Stevenson - BGS]

Hi,

Is there a way to do type hints for a generic DBAPI-compatible connection and cursor?  Our ETL Helper tool uses cx_Oracle, psycopg2 and sqlite3 connections interchangeably and it would be useful to have a generic type instead explicitly using the classes from each driver.

As far as I can see from Google, one way to achieve this would by using Protocols, as defined in PEP 544 (https://peps.python.org/pep-0544/).  Is there an "official" PEP 249 DBA API 2.0 protocol anywhere?

Thanks,
John

p.s. ETL Helper is a library we developed to make it easier for our DBAs to use Python to transfer data. https://pypi.org/project/etlhelper/


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