[Python] Connecting to database using SQLAlchemy

I'm trying to connect to a database on my local machine.

import sqlalchemy
engine = sqlalchemy.create_engine('mssql+pyodbc://localhost\\SQLEXPRESS/NCM')


It fails with the following error:

DBAPIError: (pyodbc.Error) ('IM002', '[IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified (0) (SQLDriverConnect)')


And also outputs this warning:

C:\Miniconda\envs\bees\lib\site-packages\sqlalchemy\connectors\pyodbc.py:82: SAWarning: No driver name specified; this is expected by PyODBC when using DSN-less connections
"No driver name specified; "


Where should I be looking to diagnose the problem?

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