module 'tkinter' has no attribute 'RadioButton'

根据提供的引用内容，出现错误"module 'tkinter' has no attribute 'RadioButton'"是因为tkinter模块中没有名为"RadioButton"的属性。正确的属性应该是"Radiobutton"。下面是一个演示如何使用Radiobutton的例子：

import tkinter as tk
from tkinter import messagebox

def show_selection():
    messagebox.showinfo("Selection", "You selected: " + var.get())

root = tk.Tk()
root.title("Radiobutton Example")

var = tk.StringVar()

radio_button1 = tk.Radiobutton(root, text="Option 1", variable=var, value="Option 1")
radio_button1.pack()

radio_button2 = tk.Radiobutton(root, text="Option 2", variable=var, value="Option 2")
radio_button2.pack()

radio_button3 = tk.Radiobutton(root, text="Option 3", variable=var, value="Option 3")
radio_button3.pack()

button = tk.Button(root, text="Show Selection", command=show_selection)
button.pack()

root.mainloop()

这个例子创建了一个包含三个选项的Radiobutton组件，并且在点击"Show Selection"按钮时显示所选的选项。