human
I wrote the below code

    course = _get_and_validate_course(course_key_string, request.user)
    if (not course):
        return HttpResponseNotFound()
    def get_profile_header(profile):
        "Returns    the    column    header    string    for    the    given    profile's    URLs"
        return _('{profile_name}    URL').format(profile_name=profile)
    profile_whitelist = VideoUploadConfig.get_profile_whitelist()
    videos = list(_get_videos(course))
    name_col = _('Name')
    duration_col = _('Duration')
    added_col = _('Date    Added')
    video_id_col = _('Video    ID')
    status_col = _('Status')
    profile_cols = [get_profile_header(profile) for profile in profile_whitelist]
    def make_csv_dict(video):
        "\n                                Makes    a    dictionary    suitable    for    writing    CSV    output.    This    involves\n                                extracting    the    required    items    from    the    original    video    dict    and\n                                converting    all    keys    and    values    to    UTF-8    encoded    string    objects,\n                                because    the    CSV    module    doesn't    play    well    with    unicode    objects.\n                                "
        duration_val = (str(video['duration']) if (video['duration'] > 0) else _('Pending'))
        ret = dict(([(name_col, video['client_video_id']), (duration_col, duration_val), (added_col, video['created'].isoformat()), (video_id_col, video['edx_video_id']), (status_col, video['status'])] + [(get_profile_header(encoded_video['profile']), encoded_video['url']) for encoded_video in video['encoded_videos'] if (encoded_video['profile'] in profile_whitelist)]))
        return {key.encode('utf-8'): value.encode('utf-8') for (key, value) in ret.items()}
    response = HttpResponse(content_type='text/csv')
    filename = _('{course}_video_urls').format(course=course.id.course)
    response['Content-Disposition'] = rfc6266.build_header((filename + '.csv'),...

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

@login_required
@require_GET
def video_encodings_download(request, course_key_string):