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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 extract_srcset(self, srcset):
 """ Handle ``srcset="image.png 1x, image@2x.jpg 2x"`` """

        urls = []
        for item in srcset.split(','):
            if item:
                urls.append(unquote_utf8(item.rsplit(' ', 1)[0]))
        return urls