sqlalchemy пустые данные от печати

Question

from sqlalchemy import create_engine
import pandas as pd

engine=create_engine('sqlite:///Chinook.sqlite')

with  engine.connect() as con:
    rv=con.execute("SELECT * FROM Track WHERE TrackId >= 10 ORDER BY TrackId")
    dg=pd.DataFrame(rs.fetchall())
    print(dg)

Я получаю пустые данные во время печати. ​​