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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 get_charm_url(self):
 """Get charm URL for the bracket this rank is in Returns ------- :class:`str` the URL for the charm """

        if self.rank_id <= 4: return self.RANK_CHARMS[0]
        if self.rank_id <= 8: return self.RANK_CHARMS[1]
        if self.rank_id <= 12: return self.RANK_CHARMS[2]
        if self.rank_id <= 16: return self.RANK_CHARMS[3]
        if self.rank_id <= 19: return self.RANK_CHARMS[4]
        return self.RANK_CHARMS[5]