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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 parsing(self):
 """Parameters for parsing directory trees"""

        with gui.FlexForm(self.title, auto_size_text=True, default_element_size=(40, 1)) as form:
            layout = [
                [gui.Text('Directory Paths utility', size=(30, 1), font=("Helvetica", 25), text_color='blue')],
                # Source
                [gui.Text('Source Folder', size=(15, 1), auto_size_text=False), gui.InputText('Source'),
                 gui.FolderBrowse()],

                # Parallel / Sequential
                [gui.Text('Parallel or Sequential Processing. Larger directory trees are typically parsed faster '
                          'using parallel processing.')],
                [gui.Radio('Parallel Processing', "RADIO1"), gui.Radio('Sequential Processing', "RADIO1",
                                                                       default=True)],
                [_line()],

                # Files and non-empty-folders
                [gui.Text('Return files or folders, returning folders is useful for creating inventories.')],
                [gui.Radio('Return Files', "RADIO2", default=True), gui.Radio('Return Non-Empty Directories',
                                                                              "RADIO2")],
                [_line()],

                # max_level
                [gui.Text('Max Depth.... Max number of sub directory depths to traverse (starting directory is 0)')],
                [gui.InputCombo(list(reversed(range(0, 13))), size=(20, 3))],
                [_line()],

                # Relative and absolute
                [gui.Text('Relative or Absolute Paths.  Relative paths are saved relative to the starting directory. '
                          'Absolute paths are saved as full paths.')],
                [gui.Radio('Relative Paths', "RADIO3", default=True), gui.Radio('Absolute Paths', "RADIO3")],
                [_line()],

                # Topdown and output
                [gui.Checkbox('Topdown Parse', default=True), gui.Checkbox('Live output results')],
                [_line()],

                # Save results to file
                [gui.Checkbox('Save Results to File', default=False)],
                [gui.Submit(), gui.Cancel()]]

            (button, (values)) = form.LayoutAndShow(layout)

        # gui.MsgBox(self.title, 'Parameters set', 'The results of the form are... ',
        #            'The button clicked was "{}"'.format(button), 'The values are', values, auto_close=True)

        self.params['parse'] = {
            'directory': values[0],
            'parallelize': values[1],
            'sequential': values[2],
            'yield_files': values[3],
            'non_empty_folders': values[4],
            'max_level': int(values[5]),
            '_relative': values[6],
            'full_paths': values[7],
            'topdown': values[8],
            'console_stream': values[9],
            'save_file': values[10],
        }

        if self.params['parse']['save_file']:
            self._saving()

        return self.params