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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 getDiskSpace(self):
 """Get disk space information. :return: ``metadata`` if success or ``error message`` :metadata: - expandablespace - filemaxsize - largefileminsize - largefileunusedspace - largefileusedspace - paymentspace - totallargespace - totalspace - unusedspace - usedspace """

        data = {'userid': self.user_id,
                'useridx': self.useridx,
               }
        s, metadata = self.POST('getDiskSpace',data)

        if s is True:
            usedspace = byte_readable(metadata['usedspace'])
            totalspace = byte_readable(metadata['totalspace'])
            print "Capacity: %s / %s" % (usedspace, totalspace)

            return metadata
        else:
            print message