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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 _gzip(self, response):
 """Apply gzip compression to a response."""

        bytesio = six.BytesIO()
        with gzip.GzipFile(fileobj=bytesio, mode='w') as gz:
            gz.write(response)
        return bytesio.getvalue()