Проблемы с несколькими панелями на одной странице блокнота

Я создаю программу для вычисления оценок D & D. У меня есть все бэкэнды, и я хочу сделать GUI сейчас.

То, что я пытаюсь сделать здесь, - это статическая панель для определенных кнопок (следующая, предыдущая, нормально, отмена и т.д.). Панель не работает.

Я хочу попытаться получить его в правом нижнем углу (где традиционно используются следующие/предыдущие кнопки). Эта панель может войти в блокнот sizer или в sizer sizerMain, который я сделал для всего остального в step_1.

Сообщите мне, если у вас есть вопросы. Я очень новичок в wxPython, и надеюсь, что вы сможете справиться с моим кодом...:)

Код ниже:

#!/usr/bin/python
# -*- coding: utf-8 -*-

import wx

class step_1(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent, id=wx.ID_ANY)

        # Create initial sizers and panels
        ## Main sizer, containing both panels
        sizerMain = wx.BoxSizer(wx.VERTICAL)
        ## For the main control area
        panelControl = wx.Panel(self,2)
        sizerControl = wx.GridBagSizer(hgap = 4,vgap = 4)
        ## For buttons
        panelBtn = wx.Panel(self,1)
        sizerBtn = wx.BoxSizer(wx.HORIZONTAL)

        # Add widgets
        ## Main content area
        lblTitle = wx.StaticText(self,label = "Pick Scores")
        sizerControl.Add(lblTitle,pos = (0,0),
                         flag = wx.ALIGN_CENTER|wx.TOP|wx.LEFT|wx.BOTTOM,
                         border = 5)

        btnRoll = wx.Button(self,label = "Roll!")
        sizerControl.Add(btnRoll,pos = (0,1),span = (1,5),
                         flag = wx.EXPAND|wx.ALL,border = 5)
        ### Radio boxes
        #### Radio button tuple
        rboxPick = ["Default","Strength","Dexterity","Constitution",
                    "Intelligence","Wisdom","Charisma"]

        self.lblRoll1 = wx.StaticText(self,label = "0")
        sizerControl.Add(self.lblRoll1,pos = (1,0),flag = wx.ALIGN_CENTER)
        self.rboxRoll1 = wx.RadioBox(self,label = "Roll One",choices = rboxPick)
        sizerControl.Add(self.rboxRoll1,pos = (1,1),span = (1,5),
                         flag = wx.EXPAND|wx.LEFT|wx.RIGHT,border = 2)

        self.lblRoll2 = wx.StaticText(self,label = "0")
        sizerControl.Add(self.lblRoll2,pos = (2,0),flag = wx.ALIGN_CENTER)
        self.rboxRoll2 = wx.RadioBox(self,label = "Roll Two",choices = rboxPick)
        sizerControl.Add(self.rboxRoll2,pos = (2,1),span = (1,5),
                         flag = wx.EXPAND|wx.LEFT|wx.RIGHT,border = 2)

        self.lblRoll3 = wx.StaticText(self,label = "0")
        sizerControl.Add(self.lblRoll3,pos = (3,0),flag = wx.ALIGN_CENTER)
        self.rboxRoll3 = wx.RadioBox(self,label = "Roll Three",choices = rboxPick)
        sizerControl.Add(self.rboxRoll3,pos = (3,1),span = (1,5),
                         flag = wx.EXPAND|wx.LEFT|wx.RIGHT,border = 2)

        self.lblRoll4 = wx.StaticText(self,label = "0")
        sizerControl.Add(self.lblRoll4,pos = (4,0),flag = wx.ALIGN_CENTER)
        self.rboxRoll4 = wx.RadioBox(self,label = "Roll Four",choices = rboxPick)
        sizerControl.Add(self.rboxRoll4,pos = (4,1),span = (1,5),
                         flag = wx.EXPAND|wx.LEFT|wx.RIGHT,border = 2)

        self.lblRoll5 = wx.StaticText(self,label = "0")
        sizerControl.Add(self.lblRoll5,pos = (5,0),flag = wx.ALIGN_CENTER)
        self.rboxRoll5 = wx.RadioBox(self,label = "Roll Five",choices = rboxPick)
        sizerControl.Add(self.rboxRoll5,pos = (5,1),span = (1,5),
                         flag = wx.EXPAND|wx.LEFT|wx.RIGHT,border = 2)

        self.lblRoll6 = wx.StaticText(self,label = "0")
        sizerControl.Add(self.lblRoll6,pos = (6,0),flag = wx.ALIGN_CENTER)
        self.rboxRoll6 = wx.RadioBox(self,label = "Roll Six",choices = rboxPick)
        sizerControl.Add(self.rboxRoll6,pos = (6,1),span = (1,5),
                         flag = wx.EXPAND|wx.LEFT|wx.RIGHT,border = 2)

        ### Instructions
        self.tcLogger = wx.TextCtrl(self,style = wx.TE_MULTILINE)
        sizerControl.Add(self.tcLogger,pos = (7,0),span = (1,6),
                       flag = wx.EXPAND|wx.LEFT|wx.RIGHT,border = 5)

        self.tcLogger.AppendText("""Instructions

1. Click the "Roll!" button up top.
    - Scores will be placed in the empty slots on the left side.

2. Look at the scores and decide where you want to put them.

3. Click the correct label for each score.
    - Make sure you only assign one score to one ability.

4. Click "Assign" to finalize the assignment.""")

        ## Button area
        self.btnPrev = wx.Button(self,label = "Previous",size = (90,28))
        self.btnAssign = wx.Button(self,label = "Assign",size = (90,28))
        self.btnNext = wx.Button(self,label = "Next",size = (90,28))
        sizerBtn.Add(self.btnPrev)
        sizerBtn.Add(self.btnAssign)
        sizerBtn.Add(self.btnNext,flag = wx.RIGHT|wx.BOTTOM,border = 5)

        self.btnNext.Disable()
        self.btnPrev.Disable()

        # Set and fit sizers, panels, etc.
        ## Growable rows and columns
        sizerControl.AddGrowableCol(1)
        sizerControl.AddGrowableRow(7)
        ## Finalize sizers and panels
        panelControl.SetSizerAndFit(sizerControl)
        panelBtn.SetSizerAndFit(sizerBtn)


        ### Final sizer to hold everything
        sizerMain.Add(panelControl,2,wx.EXPAND|wx.ALIGN_TOP|wx.ALL,border = 5)
        sizerMain.Add(panelBtn,1,wx.EXPAND|wx.ALIGN_BOTTOM|wx.RIGHT,border = 5)
        self.SetAutoLayout(True)
        self.SetSizerAndFit(sizerMain)
        self.Layout()

        # Bind events (as needed)


class step_2(wx.Panel):
    def __init__(self, parent):
        """"""
        wx.Panel.__init__(self, parent, id=wx.ID_ANY)

        sizer = wx.BoxSizer(wx.VERTICAL)
        txtOne = wx.TextCtrl(self, wx.ID_ANY, "")
        txtTwo = wx.TextCtrl(self, wx.ID_ANY, "")

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(txtOne, 0, wx.ALL, 5)
        sizer.Add(txtTwo, 0, wx.ALL, 5)

        self.SetSizer(sizer)

class step_3(wx.Panel):
    def __init__(self, parent):
        """"""
        wx.Panel.__init__(self, parent, id=wx.ID_ANY)

        sizer = wx.BoxSizer(wx.VERTICAL)
        txtOne = wx.TextCtrl(self, wx.ID_ANY, "")
        txtTwo = wx.TextCtrl(self, wx.ID_ANY, "")

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(txtOne, 0, wx.ALL, 5)
        sizer.Add(txtTwo, 0, wx.ALL, 5)

        self.SetSizer(sizer)

####
# create a button class here for later, don't worry about it now
####

class main_frame(wx.Frame):
    """Main Frame holding the main panel."""
    def __init__(self,*args,**kwargs):
        wx.Frame.__init__(self,*args,**kwargs)

        # Build the menu bar
        menuBar = wx.MenuBar()
        menuFile = wx.Menu()

        menuFileQuit = menuFile.Append(wx.ID_EXIT, text="&Quit")
        #self.Bind(wx.EVT_MENU, self.OnQuit,menuFileQuit)

        menuBar.Append(menuFile, "&File")
        self.SetMenuBar(menuBar)

        p = wx.Panel(self)
        nb = wx.Notebook(p)

        # create the page windows as children of the notebook
        nbPage1 = step_1(nb)
        nbPage2 = step_2(nb)
        nbPage3 = step_3(nb)

        # add the pages to the notebook with the label to show on the tab
        nb.AddPage(nbPage1,"Page 1")
        nb.AddPage(nbPage2,"Page 2")
        nb.AddPage(nbPage3,"Page 3")

        # finally, put the notebook in a sizer for the panel to manage the
        # layout
        sizer = wx.BoxSizer()
        sizer.Add(nb, 1, wx.EXPAND)
        p.SetSizer(sizer)

        self.Center()
        self.Show()

if __name__ == "__main__":
    app = wx.App(False)
    frame = main_frame(None,-1,size = (1000,1000),title = "D&D Charcter Creator")
    app.MainLoop()