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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 server(self):
 """Returns the size of remote files """

        try:
            tar = urllib2.urlopen(self.registry)
            meta = tar.info()
            return int(meta.getheaders("Content-Length")[0])
        except (urllib2.URLError, IndexError):
            return " "