tkinter.Text这样为什么get不到文本？

Question

win = tk.Tk()
win.geometry('300x200')
tk.Label(win, text='保存目录', height=1, width=10).grid(row=1, column=0)
txt_path = tk.Text(win, height=1, width=30, padx=10, pady=5)
txt_path.grid(row=1, column=1)

def down_video(sv):
    print(sv)
def get_addr():
    t = txt_path.get(0.0, tk.END)
    print(t)


tk.Button(win, text='down', width=10, height=1, command=lambda: down_video(sv=get_addr)).grid(row=2, column=0)
tk.Button(win, text='test', command=get_addr).grid(row=3, column=0)
win.mainloop()

点test按钮可以print出tk.text输入的内容。
但是按down按钮，就显示<function get_addr at 0x000000000A81FE18>

是为什么？？？