Use a wx DirDialog, FileDialog, or Messagebox without the overhead of starting wx, etc.

QuickwxDialogs.py

# Without having to worry about all the hassle of starting a wx app or remembering flags, just
# show a dialog box to get a directory, file or messagebox and be done with it.
# Zack Gainsforth 2014
import wx

if 'app' not in locals():
    app = wx.App(None)

def DirDialog(DefaultDir='', Title='Select Directory:'):
    dlg = wx.DirDialog (None, Title, DefaultDir, wx.DD_DEFAULT_STYLE | wx.DD_DIR_MUST_EXIST)
    if dlg.ShowModal() == wx.ID_OK:
        DirName = dlg.GetPath()
    else:
        DirName = None
    dlg.Destroy()

    return DirName

def FileDialog(DefaultDir='', Title='Select File:', Extension=''):
    dlg = wx.FileDialog (None, Title, DefaultDir, '', Extension, wx.FD_DEFAULT_STYLE | wx.FD_FILE_MUST_EXIST)
    if dlg.ShowModal() == wx.ID_OK:
        FileName = dlg.GetPath()
    else:
        FileName = None
    dlg.Destroy()

    return FileName

def MessageBox(Title='Information', Message=None):
    dlg = wx.MessageBox(Message, Title, wx.OK | wx.ICON_INFORMATION)
    dlg.ShowModal()
    dlg.Destroy()

    return