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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 src_to_dst(self, src_uri):
 """Map source URI to destination path."""

        for map in self.mappings:
            dst_path = map.src_to_dst(src_uri)
            if (dst_path is not None):
                return(dst_path)
        # Must have failed if loop exited
        raise MapperError(
            "Unable to translate source URI (%s) into "
            "a destination path." % (src_uri))