#!/usr/bin/python
# -*- coding: cp949 -*-
# layout.py

import wx

class MyFrame(wx.Frame):
    def __init__(self, parent, id, title):
        wx.Frame.__init__(self, parent, id, title, (-1, -1), wx.Size(550, 300))
        # 패널 생성
        panel = wx.Panel(self, -1)
        # 박스 생성
        box = wx.BoxSizer(wx.HORIZONTAL)
        # 버튼 추가 및 버튼 정렬
        box.Add(wx.Button(panel, -1, 'Button1'), 1, wx.ALL, 5)
        box.Add(wx.Button(panel, -1, 'Button2'), 0, wx.EXPAND)
        box.Add(wx.Button(panel, -1, 'Button3'), 0, wx.ALIGN_CENTER)

        panel.SetSizer(box)
        self.Center()

class MyApp(wx.App):
    def OnInit(self):
        frame = MyFrame(None, -1, 'layout.py')
        frame.Show(True)
        return True

app = wx.App()
mainapp = MyApp(app)
mainapp.MainLoop()

[실행 결과]