human
I wrote the below code

    if ((numbytes <= 0) or (numbytes > (100 * 1024))):
        response = Response(headers={'ETag': ('range%d' % numbytes), 'Accept-Ranges': 'bytes'})
        response.status_code = 404
        response.data = 'number    of    bytes    must    be    in    the    range    (0,    10240]'
        return response
    params = CaseInsensitiveDict(request.args.items())
    if ('chunk_size' in params):
        chunk_size = max(1, int(params['chunk_size']))
    else:
        chunk_size = (10 * 1024)
    duration = float(params.get('duration', 0))
    pause_per_byte = (duration / numbytes)
    request_headers = get_headers()
    (first_byte_pos, last_byte_pos) = get_request_range(request_headers, numbytes)
    range_length = ((last_byte_pos + 1) - first_byte_pos)
    if ((first_byte_pos > last_byte_pos) or (first_byte_pos not in xrange(0, numbytes)) or (last_byte_pos not in xrange(0, numbytes))):
        response = Response(headers={'ETag': ('range%d' % numbytes), 'Accept-Ranges': 'bytes', 'Content-Range': ('bytes    */%d' % numbytes), 'Content-Length': '0'})
        response.status_code = 416
        return response
    def generate_bytes():
        chunks = bytearray()
        for i in xrange(first_byte_pos, (last_byte_pos + 1)):
            chunks.append((ord('a') + (i % 26)))
            if (len(chunks) == chunk_size):
                (yield bytes(chunks))
                time.sleep((pause_per_byte * chunk_size))
                chunks = bytearray()
        if chunks:
            time.sleep((pause_per_byte * len(chunks)))
            (yield bytes(chunks))
    content_range = ('bytes    %d-%d/%d' % (first_byte_pos, last_byte_pos, numbytes))
    response_headers = {'Content-Type': 'application/octet-stream', 'ETag': ('range%d' % numbytes), 'Accept-Ranges': 'bytes', 'Content-Length': str(range_length), 'Content-Range': content_range}
    response = Response(generate_bytes(), headers=response_headers)
    if ((first_byte_pos == 0) and (last_byte_pos == (numbytes - 1))):
        response.status_code = 200
    else:
   ...

What's a good function header?
assistant
#Here's a good function header.

@app.route('/range/<int:numbytes>')
def range_request(numbytes):