Question

我对标题所说的确实遇到了麻烦。我有一点这个代码：

class eventAdd:
    def __init__(self):
        class agendaEvent:
            def __init__(self, master):
                self.frame = Frame(master, padx=10, pady=10)

稍后，在classAdd类之外，但与eventAdd处于同一级别，我有：

def addEvent():
    instance = eventAdd()
    doneButton = Button([PROBLEM AREA], text="Done", command=done)

我输入[问题区域]的地方显然是问题区域。我想在eventAdd里面的agendaEvent里面的框架里面创建doneButton。是否可以在类内部的init内的类中引用init内的变量，以便像这样使用？如果是这样，怎么样？

我为我可能承诺的任何编程罪行道歉。我对编程很新，我还不确定最好的方法是什么。欢迎任何建议。

提前致谢。

编辑：完整脚本：

from Tkinter import *
from functools import partial


class eventAdd:
    def __init__(self):
        class agendaEvent:
            def __init__(self, master):
                self.frame = Frame(master, padx=10, pady=10)
                self.frame.grid()
                self.name = Entry(self.frame)
                self.name.grid(row=1, column=0)
                self.time = Entry(self.frame, width=10)
                self.time.grid(row=1, column=1, padx=5)
                self.label1 = Label(self.frame, text="Event Name")
                self.label1.grid(row=0, column=0)
                self.label2 = Label(self.frame, text="Minutes")
                self.label2.grid(row=0, column=1)



        def addOne(master):
            this_instance = agendaEvent(master)
            rem = Button(this_instance.frame, text="Remove", bg="lightblue",
                 command=partial(remove_class, this_instance))
            rem.grid(row=1, column=3)


        def remove_class(instance):
            instance.frame.destroy()
            instance = ""

        def done():
            print('tbd')

        window = Tk()

        addOneButton = Button(window, text="+1", command=partial(addOne, window))
        addOneButton.grid(row=1, column=0)

        window.mainloop()

def addEvent():
    instance = eventAdd()
    doneButton = Button([PROBLEM AREA], text="Done", command=done)
    doneButton.pack()

def done():
    print('tbd')

root = Tk()

addEventButton = Button(root, text="Add Events", command=addEvent)
addEventButton.pack()

root.mainloop()

编辑：错误

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 1532, in __call__
    return self.func(*args)
  File "C:/Users/John Grady/PycharmProjects/Dad's Agenda/scripts/main.py", line 41, in addEvent
    instance = agendaEvent(window)
  File "C:/Users/John Grady/PycharmProjects/Dad's Agenda/scripts/main.py", line 6, in __init__
    self.frame = Frame(master, padx=10, pady=10)
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 2565, in __init__
    Widget.__init__(self, master, 'frame', cnf, {}, extra)
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 2086, in __init__
    (widgetName, self._w) + extra + self._options(cnf))
TclError: can't invoke "frame" command:  application has been destroyed

Answer 1

很难理解你想要完成的事情。无论如何，您将遇到的一个问题是您不应该多次调用Tk()，而且您应该只调用mainloop()一次。

如果您需要多个窗口，则需要创建Toplevel的实例。任何需要销毁和重新创建根窗口的解决方案都很难做到。

在Python中嵌套类中访问变量

1 个答案: