Simple file drop palette in Python

filedrop.py

#!/usr/bin/python

# filedrop.py
# http://zetcode.com/wxpython/draganddrop/

import wx, os, shutil, ntpath

dest_dir = '/home/user/backup/'

if not os.path.exists(dest_dir):
    os.makedirs(dest_dir)

class FileDrop(wx.FileDropTarget):
    def __init__(self, window):
        wx.FileDropTarget.__init__(self)
        self.window = window

    def OnDropFiles(self, x, y, filenames):

        for name in filenames:
            try:
                file = os.path.abspath(name)
                self.window.WriteText('Copying ' + file + '\n')
                shutil.copy2(file, dest_dir)
                os.system("exiftool -d %Y%m%d-%H%M%S.%%e '-FileName<DateTimeOriginal' " + dest_dir + ntpath.basename(file))
            except IOError, error:
                dlg = wx.MessageDialog(None, 'Error opening file\n' + str(error))
                dlg.ShowModal()

class DropFile(wx.Frame):
    def __init__(self, parent, id, title):
        wx.Frame.__init__(self, parent, id, title, size = (450, 400))

        self.text = wx.TextCtrl(self, -1, style = wx.TE_MULTILINE)
        dt = FileDrop(self.text)
        self.text.SetDropTarget(dt)
        self.Centre()
        self.Show(True)


app = wx.App()
DropFile(None, -1, 'FileDrop')
app.MainLoop()