首先，我要为我的英语不好而道歉。

我是Python的新手。

如何在此代码中自动选择新行？

def add_students():
    con = sqlite3.connect("data.db")
    cur = con.cursor()
    cur.execute("INSERT INTO students VALUES (NULL,?,?)",(name_var.get(),class_var.get()))
    con.commit()
    cur.execute("select * from students ORDER BY class ASC,name ASC")
    rows = cur.fetchall()
    if len(rows) != 0:

        my_treeview.delete(*my_treeview.get_children())
        for row in rows:

            my_treeview.insert('',END,values = row)
        con.commit()
    con.close()