How to use the cachecontrol.compat.text_type function in CacheControl

#       into cache_response, and in turn,
            #       `Serializer.dump`.
            response._fp = io.BytesIO(body)

        # NOTE: This is all a bit weird, but it's really important that on
        #       Python 2.x these objects are unicode and not str, even when
        #       they contain only ascii. The problem here is that msgpack
        #       understands the difference between unicode and bytes and we
        #       have it set to differentiate between them, however Python 2
        #       doesn't know the difference. Forcing these to unicode will be
        #       enough to have msgpack know the difference.
        data = {
            u"response": {
                u"body": body,
                u"headers": dict(
                    (text_type(k), text_type(v)) for k, v in response.headers.items()
                ),
                u"status": response.status,
                u"version": response.version,
                u"reason": text_type(response.reason),
                u"strict": response.strict,
                u"decode_content": response.decode_content,
            }
        }

        # Construct our vary headers
        data[u"vary"] = {}
        if u"vary" in response_headers:
            varied_headers = response_headers[u"vary"].split(",")
            for header in varied_headers:
                header = text_type(header).strip()
                header_value = request.headers.get(header, None)

# NOTE: This is all a bit weird, but it's really important that on
        #       Python 2.x these objects are unicode and not str, even when
        #       they contain only ascii. The problem here is that msgpack
        #       understands the difference between unicode and bytes and we
        #       have it set to differentiate between them, however Python 2
        #       doesn't know the difference. Forcing these to unicode will be
        #       enough to have msgpack know the difference.
        data = {
            u"response": {
                u"body": body,
                u"headers": dict(
                    (text_type(k), text_type(v)) for k, v in response.headers.items()
                ),
                u"status": response.status,
                u"version": response.version,
                u"reason": text_type(response.reason),
                u"strict": response.strict,
                u"decode_content": response.decode_content,
            }
        }

        # Construct our vary headers
        data[u"vary"] = {}
        if u"vary" in response_headers:
            varied_headers = response_headers[u"vary"].split(",")
            for header in varied_headers:
                header = text_type(header).strip()
                header_value = request.headers.get(header, None)
                if header_value is not None:
                    header_value = text_type(header_value)
                data[u"vary"][header] = header_value

(text_type(k), text_type(v)) for k, v in response.headers.items()
                ),
                u"status": response.status,
                u"version": response.version,
                u"reason": text_type(response.reason),
                u"strict": response.strict,
                u"decode_content": response.decode_content,
            }
        }

        # Construct our vary headers
        data[u"vary"] = {}
        if u"vary" in response_headers:
            varied_headers = response_headers[u"vary"].split(",")
            for header in varied_headers:
                header = text_type(header).strip()
                header_value = request.headers.get(header, None)
                if header_value is not None:
                    header_value = text_type(header_value)
                data[u"vary"][header] = header_value

        return b",".join([b"cc=4", msgpack.dumps(data, use_bin_type=True)])

u"version": response.version,
                u"reason": text_type(response.reason),
                u"strict": response.strict,
                u"decode_content": response.decode_content,
            }
        }

        # Construct our vary headers
        data[u"vary"] = {}
        if u"vary" in response_headers:
            varied_headers = response_headers[u"vary"].split(",")
            for header in varied_headers:
                header = text_type(header).strip()
                header_value = request.headers.get(header, None)
                if header_value is not None:
                    header_value = text_type(header_value)
                data[u"vary"][header] = header_value

        return b",".join([b"cc=4", msgpack.dumps(data, use_bin_type=True)])