code: def export_po_files(path='poexport', stdout=None):
      
      if stdout is None:
          import sys
          stdout = sys.stdout
      if not path.endswith('/'):
          path += '/'
      import polib
      import os
      from basic_cms.models import Page, Content
      source_language = settings.PAGE_DEFAULT_LANGUAGE
      source_list = []
      for page in Page.objects.published():
          source_list.extend(page.content_by_language(source_language))
  
      for lang in settings.PAGE_LANGUAGES:
          if lang[0] != settings.PAGE_DEFAULT_LANGUAGE:
              try:
                  os.mkdir(path)
              except OSError:
                  pass
              po_path = path + lang[0] + '.po'
              stdout.write("Export language %s.\n" % lang[0])
              po = polib.pofile(po_path)
              po.metadata['Content-Type'] = 'text/plain; charset=utf-8'
  
              for source_content in source_list:
                  page = source_content.page
                  try:
                      target_content = Content.objects.get_content_object(
                          page, lang[0], source_content.type)
                      msgstr = target_content.body
                  except Content.DoesNotExist:
                      target_content = None
                      msgstr = ""
                  if source_content.body:
                      if target_content:
                          tc_id = str(target_content.id)
                      else:
                          tc_id = ""
                      entry = polib.POEntry(msgid=source_content.body,
                          msgstr=msgstr)
                      entry.tcomment = po_comment % (page.title(), do_not_msg,
                          source_content.type, page.id, tc_id)
                      if entry not in po:
                          po.append(entry)
              po.save(po_path)
      stdout.write("""Export finished. The files are available """
          """in the %s directory.\n""" % path)
docs: Export all the content from the published pages into
      po files. The files will be automatically updated
      with the new content if you run the command again.