import wx
def load(event):
file = open(r'd:\somefile.txt')
contents.SetValue(file.read())
file.close()
def save(event):
file = open(r'd:\somefile.txt','w')
file.write(contents.GetValue())
file.close()
app = wx.App()
win = wx.Frame(None, title="simple editor", size=(410,335))
bkg = wx.Panel(win)
loadbutton = wx.Button(bkg, label='open')
loadbutton.Bind(wx.EVT_BUTTON, load)
savebutton = wx.Button(bkg, label='save')
savebutton.Bind(wx.EVT_BUTTON, save)
filename = wx.TextCtrl(bkg)
contents = wx.TextCtrl(bkg, style = wx.TE_MULTILINE | wx.HSCROLL)
hbox = wx.BoxSizer(wx.HORIZONTAL)
hbox.Add(filename, proportion=1, flag=wx.EXPAND)
hbox.Add(loadbutton, proportion=0, flag=wx.LEFT, border=5)
hbox.Add(savebutton, proportion=0, flag=wx.LEFT, border=5)
vbox = wx.BoxSizer(wx.VERTICAL)
vbox.Add(hbox, proportion=0, flag=wx.EXPAND | wx.ALL, border=5)
vbox.Add(contents, proportion=1, flag=wx.EXPAND | wx.LEFT | wx.BOTTOM | wx.RIGHT, border=5)
bkg.SetSizer(vbox)
win.Show()
app.MainLoop()