code: def get_page_from_string_or_id(page_string, lang=None):
      
      if type(page_string) == int:
          return Page.objects.get(pk=int(page_string))
      # if we have a string coming from some templates templates
      is_text = isinstance(page_string, SafeText)
      import sys
      PY3 = sys.version > '3'
      if PY3:
          is_string = isinstance(page_string, str)
      else:
          is_string = isinstance(page_string, unicode) or isinstance(page_string, str)
      if is_text or is_string:
          if page_string.isdigit():
              return Page.objects.get(pk=int(page_string))
          return Page.objects.from_path(page_string, lang)
      # in any other case we return the input becasue it's probably
      # a Page object.
      return page_string
docs: Return a Page object from a slug or an id.