the purpose is to get the text selected by the mouse through the Tkinter Text control

the reference code is as follows:
from-start-and-end-indices-values-from-wordstart-to-w" rel=" nofollow noreferrer "> https://stackoverflow.com/que.

part of my code:

the whole is encapsulated in a class

self.Scrolledtext1 = ScrolledText(top)
        self.Scrolledtext1.place(relx=0.46, rely=0.19, relheight=0.62
                , relwidth=0.4)
        self.Scrolledtext1.configure(background="white")
        self.Scrolledtext1.configure(font="TkTextFont")
        self.Scrolledtext1.configure(foreground="black")
        self.Scrolledtext1.configure(highlightbackground="-sharpd9d9d9")
        self.Scrolledtext1.configure(highlightcolor="black")
        self.Scrolledtext1.configure(insertbackground="black")

def button_down(self,):
            global s
            s = self.Text1.index("@%s,%s wordstart" % (event.x, event.y))

        def button_up(self, ):
            global e
            e = self.Text1.index("@%s,%s wordend" % (event.x, event.y))

 
        def test(self,):
            print(self.Scrolledtext1.get(s,e))
            
        self.Scrolledtext1.bind("<Button-1>", button_down)
        self.Scrolledtext1.bind("<ButtonRelease-1>", button_up)
        self.Button2.configure(command=test(self,))

but strangely, always making an error:

seek advice from heroes