<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def on_import1(self, event):
 """ initialize window to import an arbitrary file into the working directory """

        pmag_menu_dialogs.MoveFileIntoWD(self.parent, self.parent.WD)