gzip response

Python_gzip_response.py

import gzip
from io import BytesIO as IO


def send_response(request, response):
    accept_encoding = request.headers.get("Accept-Encoding", "") or request.headers.get("accept-encoding", "")

    if ("gzip" not in accept_encoding.lower()) or (response.status < 200 or response.status >= 300 or "Content-Encoding" in response.headers):
        return response

    gzip_buffer = IO()
    gzip_file = gzip.GzipFile(mode="wb", fileobj=gzip_buffer)
    gzip_file.write(response.body)
    gzip_file.close()

    response.body = gzip_buffer.getvalue()
    response.headers["content-encoding"] = "gzip"
    response.headers["vary"] = "accept-encoding"
    response.headers["content-length"] = len(response.body)
    return response