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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 cp_string(self, source, dest, **kwargs):
 """ Copies source string into the destination location. Parameters source: string the string with the content to copy dest: string the s3 location """


        assert isinstance(source, six.string_types), "source must be a string"
        assert self._is_s3(dest), "Destination must be s3 location"

        return self._put_string(source, dest, **kwargs)