如果文本前景值不是黑色，则tkinter单选按钮不显示选定内容

import tkinter as tk
from tkinter import ttk

root = tk.Tk()
selected_value = tk.StringVar()

def set_radiobutton_style():
    if text_foreground != "black":
        style = ttk.Style()
        style.map("TRadiobutton", foreground=[('selected', 'black')])

text_foreground = "black"  # 假设文本前景值为黑色
set_radiobutton_style()

radiobutton1 = ttk.Radiobutton(root, text="选项1", variable=selected_value, value="选项1")
radiobutton2 = ttk.Radiobutton(root, text="选项2", variable=selected_value, value="选项2")

root.mainloop()