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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 render_region(widget=None, request=None, view=None, page=None, region=None):
 """returns rendered content this is not too clear and little tricky, because external apps needs calling process method """


    # change the request
    if not isinstance(request, dict):
        request.query_string = None
        request.method = "GET"

    if not hasattr(request, '_feincms_extra_context'):
        request._feincms_extra_context = {}

    leonardo_page = widget.parent if widget else page
    render_region = widget.region if widget else region

    # call processors
    for fn in reversed(list(leonardo_page.request_processors.values())):
        try:
            r = fn(leonardo_page, request)
        except:
            pass

    contents = {}

    for content in leonardo_page.content.all_of_type(tuple(
            leonardo_page._feincms_content_types_with_process)):

        try:
            r = content.process(request, view=view)
        except:
            pass
        else:
            # this is HttpResponse object or string
            if not isinstance(r, six.string_types):
                r.render()
                contents[content.fe_identifier] = getattr(r, 'content', r)
            else:
                contents[content.fe_identifier] = r

    from leonardo.templatetags.leonardo_tags import _render_content

    region_content = ''.join(
        contents[content.fe_identifier] if content.fe_identifier in contents else _render_content(
            content, request=request, context={})
        for content in getattr(leonardo_page.content, render_region))

    return region_content