Python 3，Tkinter，如何更新按钮文本

Question

我试图做到这一点，以便当用户单击一个按钮时，它变为“ X”或“
0”（取决于他们的团队）。如何使按钮上的文本更新？到目前为止，我最好的主意是删除按钮，然后再次打印它们，但这只能删除一个按钮。这是我到目前为止的内容：

from tkinter import *

BoardValue = ["-","-","-","-","-","-","-","-","-"]

window = Tk()
window.title("Noughts And Crosses")
window.geometry("10x200")

v = StringVar()
Label(window, textvariable=v,pady=10).pack()
v.set("Noughts And Crosses")

def DrawBoard():
    for i, b in enumerate(BoardValue):
        global btn
        if i%3 == 0:
            row_frame = Frame(window)
            row_frame.pack(side="top")
        btn = Button(row_frame, text=b, relief=GROOVE, width=2, command = lambda: PlayMove())
        btn.pack(side="left")

def PlayMove():
    BoardValue[0] = "X"
    btn.destroy()
    DrawBoard()

DrawBoard()
window.mainloop()

Answer 1

就像您的标签一样，按钮小部件也有一个textvariable=选项。您可以StringVar.set()用来更新按钮。最小示例：

import tkinter as tk

root = tk.Tk()

def update_btn_text():
    btn_text.set("b")

btn_text = tk.StringVar()
btn = tk.Button(root, textvariable=btn_text, command=update_btn_text)
btn_text.set("a")

btn.pack()

root.mainloop()