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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _set_status_flag(self, status):
 """ Configure state and files on disk to match current processing status. :param str status: Name of new status designation for pipeline. """


        # Remove previous status flag file.
        flag_file_path = self._flag_file_path()
        try:
            os.remove(flag_file_path)
        except:
            # Print message only if the failure to remove the status flag
            # is unexpected; there's no flag for initialization, so we
            # can't remove the file.
            if self.status != "initializing":
                print("Could not remove flag file: '{}'".format(flag_file_path))
            pass

        # Set new status.
        prev_status = self.status
        self.status = status
        self._create_file(self._flag_file_path())
        print("\nChanged status from {} to {}.".format(
                prev_status, self.status))