Tkinter 单选按钮未正确选择
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【中文标题】Tkinter 单选按钮未正确选择【英文标题】：Tkinter radiobuttons not selecting properly 【发布时间】：2022-01-17 20:14:24 【问题描述】：我正在尝试制作一个小型 tkinter 程序来计算形状和体积的面积 我制作了一个主 py 文件“area_volume_calculator.py”和两个库“area.py”和“volume.py”
主程序的单选按钮工作正常，但是当我从Area_calculator 创建第二个窗口时，我似乎无法让单选按钮正常工作。当它打开时，最后 2 个单选按钮已被选中。
我仍然可以选择一个选项，但 self.choice.get() 总是返回默认值 -1，我不知道如何让它工作。
谁能帮我让单选按钮正常工作？ 任何和所有的帮助表示赞赏
主程序：
from tkinter import *
from area import *
# from volume import *
class Menu:
def __init__(self):
self.window = Tk()
self.window.title("Areas and Volumes")
# self.name_label = Label(self.window, text = "Name: ")
# self.name_label.grid(row=0,column=0)
# self.name_entry = Entry(self.window)
# self.name_entry.grid(row=0,column=1)
# self.age_label = Label(self.window, text = "Age: ")
# self.age_label.grid(row=1,column=0)
# self.age_entry = Entry(self.window)
# self.age_entry.grid(row=1,column=1)
self.choice = IntVar()
self.area_radiobutton = Radiobutton(self.window, text = "Area Calculator", var = self.choice, value = 0)
self.area_radiobutton.grid(row=2,column=0)
self.volume_radiobutton = Radiobutton(self.window, text = "Volume Calculator", var = self.choice, value = 1)
self.volume_radiobutton.grid(row=3,column=0)
self.choice.set(-1)
self.submit_button = Button(self.window, text = "Submit", command = self.submit)
self.submit_button.grid(row=4,column=0)
print(self.choice.get())
self.window.mainloop()
def submit(self):
print(self.choice.get())
if self.choice.get() == 0:
area_calculator = Area_calculator()
# elif self.choice.get() == 1:
# volume_calculator = Volume_calculator()
menu = Menu()
area.py 库：
from tkinter import *
class Area_calculator():
def __init__(self):
self.window = Tk()
self.window.title
self.window.title("Area Calculator")
self.choice_label = Label(self.window, text = "Choose a shape")
self.choice_label.grid(row=0,columnspan=1)
self.choice = IntVar()
self.rectangle_radiobutton = Radiobutton(self.window, text = "Rectangle", var = self.choice, value = 0)
self.rectangle_radiobutton.grid(row=1,column=0)
self.triangle_radiobutton = Radiobutton(self.window, text = "Triangle", var = self.choice, value = 1)
self.triangle_radiobutton.grid(row=2,column=0)
self.circle_radiobutton = Radiobutton(self.window, text = "Circle", var = self.choice, value = 2)
self.circle_radiobutton.grid(row=3,column=0)
self.submit_button = Button(self.window, text = "Submit", command = self.submit)
self.submit_button.grid(row=4,column=0)
self.choice.set(-1)
print(self.choice.get())
self.window.mainloop()
def submit(self):
print(self.choice.get())
# if self.choice.get() == 0:
# rectangle_calculator = Rectangle_calculator()
# elif self.choice.get() == 1:
# triangle_calculator = Triangle_calculator()
# elif self.choice.get() == 2:
# circle_calculator = Circle_calculator()
【问题讨论】：
【参考方案1】：您正在创建tk.Tk() 的两个实例（每个类中一个），这绝不是一个好主意。 tk.Tk() 不仅创建了一个新窗口，而且还创建了一个新的嵌入式 Tcl 解释器，这可能会搞砸事情，尤其是 IntVars 和其他变量，例如 self.choice。如需更多信息，请参阅here。
如果您想拥有多个窗口，请改用tk.Toplevel()。
在cmets中回答你的第二个问题，你必须首先将参数name和age添加到Area_calculator类的__init__中，并且在@中创建它时也将它们传递给类987654331@.
完成的代码：
主程序：
from tkinter import *
from area import *
class Menu:
def __init__(self):
self.window = Tk()
self.window.title("Areas and Volumes")
self.name_label = Label(self.window, text = "Name: ")
self.name_label.grid(row=0,column=0)
self.name_entry = Entry(self.window)
self.name_entry.grid(row=0,column=1)
self.age_label = Label(self.window, text = "Age: ")
self.age_label.grid(row=1,column=0)
self.age_entry = Entry(self.window)
self.age_entry.grid(row=1,column=1)
self.choice = IntVar()
self.area_radiobutton = Radiobutton(self.window, text = "Area Calculator", var = self.choice, value = 0)
self.area_radiobutton.grid(row=2,column=0)
self.volume_radiobutton = Radiobutton(self.window, text = "Volume Calculator", var = self.choice, value = 1)
self.volume_radiobutton.grid(row=3,column=0)
self.choice.set(-1)
self.submit_button = Button(self.window, text = "Submit", command = self.submit)
self.submit_button.grid(row=4,column=0)
print(self.choice.get())
self.window.mainloop()
def submit(self):
print(self.choice.get())
if self.choice.get() == 0:
name = self.name_entry.get()
age = self.age_entry.get()
area_calculator = Area_calculator(name, age)
menu = Menu()
area.py 库：
from tkinter import *
class Area_calculator():
def __init__(self, name, age):
self.window = Toplevel()
self.window.title
self.window.title("Area Calculator")
self.name_label = Label(self.window, text = f"name=", width=10)
self.name_label.grid()
self.age_label = Label(self.window, text = f"age=", width=10)
self.age_label.grid(row=0, column=1)
self.choice_label = Label(self.window, text = "Choose a shape")
self.choice_label.grid(row=1,columnspan=1)
self.choice = IntVar()
self.rectangle_radiobutton = Radiobutton(self.window, text = "Rectangle", var = self.choice, value = 0)
self.rectangle_radiobutton.grid(row=2,column=0)
self.triangle_radiobutton = Radiobutton(self.window, text = "Triangle", var = self.choice, value = 1)
self.triangle_radiobutton.grid(row=3,column=0)
self.circle_radiobutton = Radiobutton(self.window, text = "Circle", var = self.choice, value = 2)
self.circle_radiobutton.grid(row=4,column=0)
self.submit_button = Button(self.window, text = "Submit", command = self.submit)
self.submit_button.grid(row=5,column=0)
self.choice.set(-1)
print(self.choice.get())
self.window.mainloop()
def submit(self):
print(self.choice.get())
【讨论】：
非常感谢！这解决了它，如果您不介意，我还有另一个问题：在注释代码中，我得到了 2 个变量名称和年龄，我如何将这些变量传递给我可以将它们显示到第二个窗口？是否像拥有'class Area_calculator（name，age）'并从第一个窗口执行函数一样简单？ 还是写 area_calculator = Area_calculator(name, age)？以上是关于Tkinter 单选按钮未正确选择的主要内容，如果未能解决你的问题，请参考以下文章