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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 page(request):
 """ Adds the current page to the template context and runs its ``set_helper`` method. This was previously part of ``PageMiddleware``, but moved to a context processor so that we could assign these template context variables without the middleware depending on Django's ``TemplateResponse``. """

    context = {}
    page = getattr(request, "page", None)
    if isinstance(page, Page):
        # set_helpers has always expected the current template context,
        # but here we're just passing in our context dict with enough
        # variables to satisfy it.
        context = {"request": request, "page": page, "_current_page": page}
        page.set_helpers(context)
    return context