Python的Tkinter CheckButton的配置问题

Question

我想创建一个简单的GUI与多个单选按钮和两个复选框。我想根据所选的单选按钮来改变一个复选框的状态。然而，当我尝试这样做我的代码在该行

def OnParallelChanged(self): 
... 
... 
    elif self.ParallelVariable.get() == 2: 
     self.AdaptiveChkBox.config(state='normal') 

与错误失败：

Traceback (most recent call last): 
File "~/Desktop/main.py", line 206, in <module> 
    app = configuration(None) 
File "~/Desktop/main.py", line 61, in __init__ 
    self.initialize() 
File "~/Desktop/main.py", line 101, in initialize 
    self.OnParallelChanged() 
File "~/Desktop/main.py", line 157, in OnParallelChanged 
    self.AdaptiveChkBox.config(state='normal') 
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/Tkinter.py", line 1826, in __getattr__ 
    return getattr(self.tk, attr) 
AttributeError: AdaptiveChkBox 

如果我评论这行一切正常。我不明白这个问题。任何帮助表示赞赏。 这里是整个代码：

import Tkinter 

class configuration(Tkinter.Tk): 
    def __init__(self, parent): 
     Tkinter.Tk.__init__(self, parent) 
     self.parent = parent 
     self.initialize() 

    def initialize(self): 
     self.grid() 

     self.buildBtn = Tkinter.Button(self, text=u'Build!', 
             command=self.OnBuildButtonClick) 
     self.buildBtn.grid(column=1, row=5) 

     self.runBtn = Tkinter.Button(self, text=u'Run!', 
            command=self.OnRunButtonClick) 
     self.runBtn.grid(column=2, row=5) 

     self.parallelLabel = Tkinter.Label(self, 
              text=u'Choose device:', 
              anchor='w') 
     self.parallelLabel.grid(column=0, row=0, columnspan=2, sticky='EW') 

     self.solverLabel = Tkinter.Label(self, 
             text=u'Choose Solver:', 
             anchor="w") 
     self.solverLabel.grid(column=2, row=0, columnspan=2, sticky='EW') 

     self.parallelMods = [ 
      ("MPI", 1), 
      ("OpenMp", 2), 
      ("GPU", 3) 
     ] 

     self.ParallelVariable = Tkinter.IntVar() 
     self.ParallelVariable.set(2) 

     for text, mode in self.parallelMods: 
      self.b = Tkinter.Radiobutton(self, text=text, 
             variable=self.ParallelVariable, 
             value=mode, 
             command=self.OnParallelChanged) 
      self.b.grid(column=0, row=mode, sticky='W') 

     self.SolverVariable = Tkinter.IntVar() 
     self.OnParallelChanged() 

     self.LogVariable = Tkinter.IntVar() 
     self.LogVariable.set(1) 
     self.LogChkBox = Tkinter.Checkbutton(self, 
              text='Log solvers', 
              variable=self.LogVariable) 
     self.LogChkBox.grid(column=4, row=1, sticky='W') 

     self.AdaptiveVariable = Tkinter.IntVar() 
     self.AdaptiveVariable.set(1) 
     self.AdaptiveChkBox = Tkinter.Checkbutton(self, 
                text='Adaptive', 
                state='disabled', 
                variable=self.AdaptiveVariable) 
     self.AdaptiveChkBox.grid(column=4, row=2, sticky='W') 

     self.grid_columnconfigure(0, weight=1) 
     self.resizable(True, False) 
     self.update() 
     self.geometry(self.geometry()) 
     self.bind("<Return>", self.OnReturnHit) 

    def OnBuildButtonClick(self): 
     self.buildBtn.config(state='disabled') 
     self.runBtn.config(state='disabled') 

    def OnRunButtonClick(self): 
     self.buildBtn.config(state='disabled') 
     self.runBtn.config(state='disabled') 

    def OnReturnHit(self, event): 
     self.OnRunButtonClick() 

    def OnParallelChanged(self): 
     if self.ParallelVariable.get() == 1: 
      # self.AdaptiveChkBox.config(state="disabled") 
      self.SolverVariable.set(2) 
      self.solverMods = [ 
       ("AGMG", 1, 'disabled'), 
       ("Trilinos", 2, 'normal'), 
       ("Paralution", 3, 'disabled') 
      ] 
     elif self.ParallelVariable.get() == 2: 
      self.AdaptiveChkBox.config(state='normal') 
      self.SolverVariable.set(2) 
      self.solverMods = [ 
       ("AGMG", 1, 'normal'), 
       ("Trilinos", 2, 'normal'), 
       ("Paralution", 3, 'disabled') 
      ] 
     elif self.ParallelVariable.get() == 3: 
      # self.AdaptiveChkBox.config(state="disabled") 
      self.SolverVariable.set(3) 
      self.solverMods = [ 
       ("AGMG", 1, 'disabled'), 
       ("Trilinos", 2, 'disabled'), 
       ("Paralution", 3, 'normal') 
      ] 

     self.setSolverRadioButtons(solverMods=self.solverMods) 

    def setSolverRadioButtons(self, solverMods): 
     for text, mode, sState in solverMods: 
      b = Tkinter.Radiobutton(self, text=text, 
            variable=self.SolverVariable, 
            value=mode, 
            state=sState) 
      b.grid(column=2, row=mode, sticky='W') 

    def center(self): 
     self.update_idletasks() 
     width = self.winfo_width() 
     frm_width = self.winfo_rootx() - self.winfo_x() 
     win_width = width + 2 * frm_width 
     height = self.winfo_height() 
     title_bar_height = self.winfo_rooty() - self.winfo_y() 
     win_height = height + title_bar_height + frm_width 
     x = self.winfo_screenwidth() // 2 - win_width // 2 
     y = self.winfo_screenheight() // 2 - win_height // 2 
     self.geometry('{}x{}+{}+{}'.format(width, height, x, y)) 
     if self.attributes('-alpha') == 0: 
      self.attributes('-alpha', 1.0) 
     self.deiconify() 


if __name__ == "__main__": 
    app = configuration(None) 
    app.title('Configure GIA') 
    app.center() 
    app.mainloop() 

Answer 1

你调用initializeself.OnParallelChanged()，但你设置self.AdaptiveChkBox只有几行后