过去一周我一直在努力解决这个问题，需要一些帮助。我正在尝试编写一个GUI来计算所有选中的复选框的总和。到目前为止，这是我的代码：
import tkinter
import tkinter.messagebox
class Joes_auto:
def __init__(self):
# Create the main window.
self.main_window = tkinter.Tk()
# Create the frames. One for the checkbuttons,
# one for the total frame, and one for the buttons
self.top_frame = tkinter.Frame(self.main_window)
self.mid_frame = tkinter.Frame(self.main_window)
self.bottom_frame = tkinter.Frame(self.main_window)
#Create the IntVar objects to use with the checkbuttons
self.oil_change = tkinter.IntVar()
self.lube_job = tkinter.IntVar()
self.radiator_flush = tkinter.IntVar()
self.transmission_flush = tkinter.IntVar()
self.inspection = tkinter.IntVar()
self.muffler_replacement = tkinter.IntVar()
self.tire_rotation = tkinter.IntVar()
# Set the IntVar objects to 0
self.oil_change.set(0)
self.lube_job.set(0)
self.radiator_flush.set(0)
self.transmission_flush.set(0)
self.inspection.set(0)
self.muffler_replacement.set(0)
self.tire_rotation.set(0)
# Create the Checkbutton widgets in the top_frame
self.oil_change = tkinter.Checkbutton(self.top_frame, text = 'Oil Change ($30)', \
variable=self.oil_change)
self.lube_job = tkinter.Checkbutton(self.top_frame, text = 'Lube Job ($20)', \
variable=self.lube_job)
self.radiator_flush = tkinter.Checkbutton(self.top_frame, text = 'Radiator Flush ($40)', \
variable=self.radiator_flush)
self.transmission_flush = tkinter.Checkbutton(self.top_frame, text = 'Transmission Flush ($100)', \
variable=self.transmission_flush)
self.inspection = tkinter.Checkbutton(self.top_frame, text = 'Inspection ($35)', \
variable=self.inspection)
self.muffler_replacement = tkinter.Checkbutton(self.top_frame, text = 'Muffler Replacement ($200)', \
variable=self.muffler_replacement)
self.tire_rotation = tkinter.Checkbutton(self.top_frame, text = 'Tire Rotation ($20)', \
variable=self.tire_rotation)
# Pack the Checkbuttons
self.oil_change.pack()
self.lube_job.pack()
self.radiator_flush.pack()
self.transmission_flush.pack()
self.inspection.pack()
self.muffler_replacement.pack()
self.tire_rotation.pack()
# Create a total and quit button
self.total_button = tkinter.Button(self.bottom_frame, text = 'Calculate Total', \
command = self.total)
self.quit_button = tkinter.Button(self.bottom_frame, text = 'Quit', \
command = self.main_window.destroy)
# Pack the buttons
self.total_button.pack(side = 'left')
self.quit_button.pack(side = 'left')
# Pack the frames
self.top_frame.pack()
self.mid_frame.pack()
self.bottom_frame.pack()
# Start the mainloop
tkinter.mainloop()
def total(self):
self.total = 0
if self.oil_change.get() == 1:
self.total += 30
if self.lube_job.get() == 1:
self.total += 20
if self.radiator_flush.get() == 1:
self.total += 40
if self.transmission_flush.get() == 1:
self.total += 100
if self.inspection.get() == 1:
self.total += 35
if self.muffler_replacement.get() == 1:
self.total += 200
if self.tire_rotation.get() == 1:
self.total += 20
tkinter.messagebox.showinfo("Your total is", self.total)
joes_auto = Joes_auto()
每次运行程序时，我都会遇到AttributeError：Checkbutton没有属性＆＃39; get＆＃39;。我希望程序计算所有已检查服务的总数并显示总数。
答案 0 :(得分：1)
首先，您创建一堆public static void main(String[] args) throws InstantiationException, IllegalAccessException, NoSuchFieldException, SecurityException, NoSuchMethodException {
Class<?> type = new ByteBuddy()
.subclass(Object.class)
.name("domain")
.defineField("id", int.class, Visibility.PRIVATE)
.defineMethod("getId", int.class, Visibility.PUBLIC).intercept(FieldAccessor.ofBeanProperty())
.defineMethod("setId", Void.TYPE, Visibility.PUBLIC).intercept(FieldAccessor.ofBeanProperty())
.make()
.load(sample.class.getClassLoader(), ClassLoadingStrategy.Default.WRAPPER)
.getLoaded();
Object o = type.newInstance();
Field f = o.getClass().getDeclaredField("id");
f.setAccessible(true);
System.out.println(o.toString());
Method m = o.getClass().getDeclaredMethod("getId");
System.out.println(m.getName());
Method s = o.getClass().getDeclaredMethod("setId", int.class);
System.out.println(s.getName());
}
并将其保存为IntVar实例的属性
Joes_auto等，但随后用
破坏了这些属性self.oil_change = tkinter.IntVar()
等。所以现在self.oil_change = tkinter.Checkbutton(self.top_frame, text = 'Oil Change ($30)', \
variable=self.oil_change)
指的是Checkbutton，而不是IntVar。这就是你得到这个错误的原因：IntVar有一个self.oil_change方法，但Checkbutton小部件没有。
因此，您需要为Checkbuttons提供与其关联的IntVar不同的名称。或者甚至不打扰给他们永久的名字，只是做
.get等。 （我摆脱了那些反斜杠 - 你不需要它们，因为你在括号内继续一行。这也适用于括号和括号内。）
顺便说一句，你可以通过改变
来节省一些打字b = tkinter.Checkbutton(self.top_frame, text = 'Oil Change ($30)',
variable=self.oil_change)
b.pack()
b = tkinter.Checkbutton(self.top_frame, text = 'Lube Job ($20)',
variable=self.lube_job)
b.pack()
到
import tkinter
然后你可以做
import tkinter as tk
等
答案 1 :(得分：1)
当您创建select *
from student
order by primarykey desc
offset 1 row
fetch first 1 row only;
个实例时，您将覆盖具有相同名称的Checkbutton个变量。
IntVar通过为self.oil_change = tkinter.Checkbutton(self.top_frame, text = 'Oil Change ($30)',
variable=self.oil_change)
个实例选择其他名称来避免这种情况。实际上，没有复选框实例引用的用例;您可以立即打包而不保存到变量：
Checkbutton在# Create the Checkbutton widgets in the top_frame
tkinter.Checkbutton(self.top_frame, text='Oil Change ($30)',
variable=self.oil_change).pack()
tkinter.Checkbutton(self.top_frame, text='Lube Job ($20)',
variable=self.lube_job).pack()
tkinter.Checkbutton(self.top_frame, text='Radiator Flush ($40)',
variable=self.radiator_flush).pack()
tkinter.Checkbutton(self.top_frame, text='Transmission Flush ($100)',
variable=self.transmission_flush).pack()
tkinter.Checkbutton(self.top_frame, text='Inspection ($35)',
variable=self.inspection).pack()
tkinter.Checkbutton(self.top_frame, text='Muffler Replacement ($200)',
variable=self.muffler_replacement).pack()
tkinter.Checkbutton(self.top_frame, text='Tire Rotation ($20)',
variable=self.tire_rotation).pack()
方法中存在另一个属性覆盖问题：该方法正在覆盖total;方法将替换为self.total对象。因为该方法是绑定的，不会在外面使用;因此，除非您在其他地方访问int方法，但仍然无效，否则不会出现任何症状。
我建议将total更改为self.total = 0，因为total = 0仅用于该方法。
total