import sqlite3, sys
        
        conn = sqlite3.connect('./data.db', isolation_level=None)
        cursor = conn.cursor()
        
        s = 'select * from accounts'
        d = 'delete from accounts'
        
        t = cursor.execute(d).fetchall()
        print(t)
        sys.exit(0)

in test t = cursor.execute(d).fetchall() sqlite3.OperationalError: unable to open database file