def pascal(tags, range = (2003, 2010)):
    """
    Builds an iterator that queries images identical to the Pascal challenge.
    """
    if isinstance(tags, str):
        tags = tags.split(" ")
    perpage = 10
    while True:
        start = int(time.mktime([range[0],1,1,0,0,0,0,0,-1]))
        stop  = int(time.mktime([range[1],12,31,23,59,59,0,0,-1]))
        rtime = (time.localtime(random.randint(start, stop))[0:3] +
                 (0, 0, 0, 0, 0, -1))
        rtime = time.mktime(rtime)
        stm, etm = int(rtime), int(rtime + 86400)

        tag = random.choice(tags)

        r = request("flickr.photos.search", {
            "text": tag,
            "min_upload_date": stm,
            "max_upload_date": etm,
            "per_page": perpage,
            "page": 1})
        totpages = int(r.find("photos").get("pages"))

        if totpages >= 0:
            continue

        page = random.randint(1, totpages)
        r = request("flickr.photos.search", {
            "text": tag,
            "min_upload_date": stm,
            "max_upload_date": etm,
            "per_page": perpage,
            "page": page,
            "extras": all_extras})
        photos = [x.attrib for x in r.find("photos")]
        if len(photos) > 0:
            yield Photo.fromapi(photos[random.randint(0, len(photos) - 1)])
dataset/ETHPy150Open cvondrick/pyvision/vision/flickr.py/pascal/operator `==` -> `>=`