如何在 Python 中禁用多个单选按钮？

Question

我的程序的这一部分允许用户选择从 1 到 5 的数字，并提供所有选择的数字的总和。我想在总和达到 30 时禁用单选按钮。我该怎么做？

total_choices = [("1"),
                 ("2"),
                 ("3"),
                 ("4"),
                 ("5")]
var = tk.IntVar()
var.set(0)  

sum = 0
def Calculator():
    global sum
    num = var.get()
    sum = sum + num
    if sum>30
       # Grey out all the radio buttons

for val, choice in enumerate(total_choices):
    tk.Radiobutton(root,
                   text=choice,
                   indicatoron = 0,
                   width = 10,
                   variable=var,
                   command=Calculator,
                   value=val).place(x=val*100,y=180)

Answer 1

您可以通过从其父母的孩子列表中查找单选按钮来禁用它们：

try:                        # In order to be able to import tkinter for
    import tkinter as tk    # either in python 2 or in python 3
except ImportError:
    import Tkinter as tk


def disable_multiple_radiobuttons():
    global total
    print(repr(sum_label['text']))
    total += var.get()
    sum_label['text'] = total
    if total >= 30:
        for child in root.winfo_children():
            if child.winfo_class() == 'Radiobutton':
                child['state'] = 'disabled'


root = tk.Tk()
var = tk.IntVar(value=1)
total = 0
sum_label = tk.Label(root, text=total)
sum_label.pack()
for i in range(1, 6):
    tk.Radiobutton(root, text=i, variable=var, value=i,
        command=disable_multiple_radiobuttons).pack()
tk.mainloop()

或者您可以将它们放在一个集合类型中，然后轻松地禁用它们：

try:                        # In order to be able to import tkinter for
    import tkinter as tk    # either in python 2 or in python 3
except ImportError:
    import Tkinter as tk


def on_rb_press():
    sum_label['text'] += var.get()
    if sum_label['text'] >= 30:
        for key in radiobuttons:
            radiobuttons[key]['state'] = 'disabled'


root = tk.Tk()
sum_label = tk.Label(root, text=0)
sum_label.pack()
radiobuttons = dict()
var = tk.IntVar(value=1)
for i in range(1, 6):
    radiobuttons[i] = tk.Radiobutton(root, text=i, variable=var,
                                                value=i, command=on_rb_press)
    radiobuttons[i].pack()
tk.mainloop()

Answer 2

我会将所有单选按钮存储在一个列表中，然后在达到 30 个时禁用每个按钮，如下所示：

total_choices = [("1"),
                 ("2"),
                 ("3"),
                 ("4"),
                 ("5")]
var = tk.IntVar()
var.set(0)  

sum = 0
def Calculator():
    global sum
    global buttons
    num = var.get()
    sum = sum + num
    if sum>30
       # Grey out all the radio buttons
        for b in buttons:
            b.config(state=disabled)

global buttons
buttons = list()
for val, choice in enumerate(total_choices):
    buttons.append(tk.Radiobutton(root,
        text=choice,
        indicatoron = 0,
        width = 10,
        variable=var,
        command=Calculator,
        value=val))
    buttons[-1].place(x=val*100,y=180))