(self)
Close I/O established in "open".
Close I/O established in "open".
Close I / O established in open .
def shutdown(self):
        """Close I/O established in "open"."""
        self.readfile.close()
        self.writefile.close()
        self.process.wait()
def shutdown ( self ) : self . readfile . close ( ) self . writefile . close ( ) self . process . wait ( )