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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 pages_breadcrumb(context, page, url='/'):
 """ Render a breadcrumb like menu. Override ``pages/breadcrumb.html`` if you want to change the design. :param page: the current page :param url: not used anymore """

    lang = context.get('lang', pages_settings.PAGE_DEFAULT_LANGUAGE)
    page = get_page_from_string_or_id(page, lang)
    pages_navigation = None
    if page:
        pages_navigation = page.get_ancestors()
    context.update({'pages_navigation': pages_navigation, 'page': page})
    return context