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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 ingest(self, token, endpoint=None, timeout=None, compress=None):
 """Obtain a datapoint and event ingest client."""

        from . import ingest
        if ingest.sf_pbuf:
            client = ingest.ProtoBufSignalFxIngestClient
        else:
            _logger.warn('Protocol Buffers not installed properly; '
                         'falling back to JSON.')
            client = ingest.JsonSignalFxIngestClient
        compress = compress if compress is not None else self._compress
        return client(
            token=token,
            endpoint=endpoint or self._ingest_endpoint,
            timeout=timeout or self._timeout,
            compress=compress)