在我正在开发的应用程序中，我有一个类设置来处理我的所有 GUI。此类中的一个方法创建一个框架并从循环中填充一组单选按钮。该方法将在类外部多次调用以重绘该帧。我遇到的问题是，当重新绘制框架时，它实际上只是覆盖了现有框架（旧框架仍然存在）。因此，如果稍后调用中的选项较少，则较早的选项仍然可见。我曾尝试先在框架上执行 grid_remove，但无法使其正常工作。所以我的问题是，为什么 grid_remove() 在下面的 initMech() 方法中不起作用？
#!/usr/bin/env python
from Tkinter import *
class MWindow(Frame):
def __init__(self, parent) :
Frame.__init__(self, parent)
self.parent = parent
self.initUI()
def initUI(self):
topframe = Frame(self.parent, bd=2, relief=GROOVE, padx=5, pady=5, width=300, height=50)
topframe.grid(row=0, column=0)
desc = Button(topframe, text="list1", command=lambda:set_list(1))
desc.grid(row=0,column=1)
desc2 = Button(topframe, text="list2", command=lambda:set_list(2))
desc2.grid(row=0,column=2)
def initMech(self):
try:
radio_frame.grid_remove()
except:
print "can't remove"
radio_frame = Frame(self.parent, bd=2, relief=GROOVE, padx=5, pady=5, width=300, height=50)
radio_frame.grid(row=1, column=0)
variant=StringVar()
c = 0
for x in chas.v_list:
Radiobutton(radio_frame, text=x,variable=variant, value=x, command=lambda x = x:chas.set_vari(x)).grid(row=0, column=c)
c = c+1
def onExit(self):
self.parent.destroy()
class Mech():
def set_chass(self,chass):
try:
if self.chassis == chass:
pass
else:
self.chassis = chass
del self.vari
except AttributeError:
self.chassis = chass
def load_vari(self):
if self.chassis == 1:
self.v_list = ["a","b","c"]
else:
self.v_list = ["w", "x", "y", "z"]
win.initMech()
def set_vari(self, vari):
self.vari = vari
def set_list(num):
chas.set_chass(num)
chas.load_vari()
root = Tk()
win = MWindow(root)
chas = Mech()
root.mainloop()