How to use the moltemplate.ttree.EraseTemplateFiles function in moltemplate

ExecCommands(g_static_commands,
                     files_content,
                     settings,
                     False)
        ExecCommands(g_instance_commands,
                     files_content,
                     settings,
                     False)

        # Finally: write the rendered text to actual files.

        # Erase the files that will be written to:
        sys.stderr.write(' done\nwriting templates...')
        EraseTemplateFiles(g_static_commands)
        EraseTemplateFiles(g_instance_commands)

        # Write the files as templates
        # (with the original variable names present)
        WriteFiles(files_content, suffix=".template", write_to_stdout=False)

        # Write the files with the variables substituted by values
        sys.stderr.write(' done\nbuilding and rendering templates...')
        files_content = defaultdict(list)
        ExecCommands(g_static_commands, files_content, settings, True)
        ExecCommands(g_instance_commands, files_content, settings, True)
        sys.stderr.write(' done\nwriting rendered templates...\n')
        WriteFiles(files_content)
        sys.stderr.write(' done\n')

        # Now write the variable bindings/assignments table.
        sys.stderr.write('writing \"ttree_assignments.txt\" file...')

files_content = defaultdict(list)

        ExecCommands(g_static_commands, 
                     files_content, 
                     settings, 
                     False)
        ExecCommands(g_instance_commands, 
                     files_content,
                     settings, 
                     False)

        # Erase the files that will be written to:
        sys.stderr.write(' done\nwriting templates...')
        EraseTemplateFiles(g_static_commands)
        EraseTemplateFiles(g_instance_commands)

        # Write the files as templates 
        # (with the original variable names present)
        WriteFiles(files_content, suffix=".template", write_to_stdout=False)

        # Write the files with the variables substituted by values
        sys.stderr.write(' done\nbuilding and rendering templates...')
        files_content = defaultdict(list)
        ExecCommands(g_static_commands, files_content, settings, True)
        ExecCommands(g_instance_commands, files_content, settings, True)
        sys.stderr.write(' done\nwriting rendered templates...\n')
        WriteFiles(files_content)

        # Now write the variable bindings/assignments table.
        sys.stderr.write('writing \"ttree_assignments.txt\" file...')
        open('ttree_assignments.txt', 'w').close() # <-- erase previous version.

files_content = defaultdict(list)

        ExecCommands(g_static_commands,
                     files_content,
                     settings,
                     False)
        ExecCommands(g_instance_commands,
                     files_content,
                     settings,
                     False)

        # Finally: write the rendered text to actual files.

        # Erase the files that will be written to:
        sys.stderr.write(' done\nwriting templates...')
        EraseTemplateFiles(g_static_commands)
        EraseTemplateFiles(g_instance_commands)

        # Write the files as templates
        # (with the original variable names present)
        WriteFiles(files_content, suffix=".template", write_to_stdout=False)

        # Write the files with the variables substituted by values
        sys.stderr.write(' done\nbuilding and rendering templates...')
        files_content = defaultdict(list)
        ExecCommands(g_static_commands, files_content, settings, True)
        ExecCommands(g_instance_commands, files_content, settings, True)
        sys.stderr.write(' done\nwriting rendered templates...\n')
        WriteFiles(files_content)
        sys.stderr.write(' done\n')

        # Now write the variable bindings/assignments table.

sys.stderr.write(' done\nbuilding templates...')

        files_content = defaultdict(list)

        ExecCommands(g_static_commands, 
                     files_content, 
                     settings, 
                     False)
        ExecCommands(g_instance_commands, 
                     files_content,
                     settings, 
                     False)

        # Erase the files that will be written to:
        sys.stderr.write(' done\nwriting templates...')
        EraseTemplateFiles(g_static_commands)
        EraseTemplateFiles(g_instance_commands)

        # Write the files as templates 
        # (with the original variable names present)
        WriteFiles(files_content, suffix=".template", write_to_stdout=False)

        # Write the files with the variables substituted by values
        sys.stderr.write(' done\nbuilding and rendering templates...')
        files_content = defaultdict(list)
        ExecCommands(g_static_commands, files_content, settings, True)
        ExecCommands(g_instance_commands, files_content, settings, True)
        sys.stderr.write(' done\nwriting rendered templates...\n')
        WriteFiles(files_content)

        # Now write the variable bindings/assignments table.
        sys.stderr.write('writing \"ttree_assignments.txt\" file...')