Question

我一直在尝试使用#!/usr/bin/env python # -*- coding: utf-8 -*- import Tkinter as tk from Tkinter import * class MainApplication(tk.Frame): def __init__(self, parent, *args, **kwargs): tk.Frame.__init__(self, parent, *args, **kwargs) self.parent = parent def onClick(self, event): print("Clicked") def qChoice(self, **kwargs): v = IntVar() v.set(1) for key, value in kwargs.iteritems(): self.Rbutton = Radiobutton(text=key, variable=v, value=value) self.Rbutton.grid(sticky=W) def basics(self): self.label = Label(text="Enter name:") self.label.grid(column=0, row=0, sticky="E") self.entry = Entry() self.entry.grid(column=1, row=0) self.button = Button(text="Enter") self.button.bind("<Button-1>", self.onClick) self.button.grid(column=3, row=0) self.qChoice(Easy=1,Medium=2,Hard=3,Extreme=4) if __name__ == "__main__": root = tk.Tk() App = MainApplication(root) App.basics() root.mainloop()制作Radiobutton的选择菜单。不幸的是，发送的变量订单并不像以前那样保持：Easy，Medium，Hard，Extreme。而且，即使我将v设置为特定值，也会立即选择所有选项。

我在这里错过了什么吗？

dic1 = {
    'a':2,
    'b':3
}

dic2 = {
    'a':2,
    'b':3,
    'c':5
}
...

Answer 1

您正在使用v的局部变量，该函数在函数退出时会收集垃圾。您需要保留永久性参考：

def qChoice(self, **kwargs):
    self.v = Intvar()
    ...

在旁注中，您不需要两个import语句。使用其中一个，但不是两个。理想情况下，使用第一个：

import Tkinter as tk

Answer 2

您的IntVar()是本地的，并且是被盗的。

def qChoice(self, **kwargs):
    # changed to self.v from v
    self.v = IntVar()
    # .set(None) leaves all the self.v instances blank
    # if you did .set('1'), the first one will be auto-selected
    # you can also remove this line if you want them to start blank
    self.v.set(None)
    for key, value in kwargs.iteritems():
        self.Rbutton = Radiobutton(text=key, variable=self.v, value=value)
        self.Rbutton.grid(sticky=W)

类似主题：

Reference 1

Reference 2

自动选择Radiobutton tkinter

2 个答案: