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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 log(self, request, spider):
 """Logs given request. Parameters request : scrapy.http.Request spider : scrapy.spiders.Spider """

        if self.debug:
            msg = "Filtered duplicate request: %(request)s"
            self.logger.debug(msg, {'request': request}, extra={'spider': spider})
        elif self.logdupes:
            msg = ("Filtered duplicate request %(request)s"
                   " - no more duplicates will be shown"
                   " (see DUPEFILTER_DEBUG to show all duplicates)")
            self.logger.debug(msg, {'request': request}, extra={'spider': spider})
            self.logdupes = False