def _download_url(resp, link, temp_location):
    fp = open(temp_location, 'wb')
    download_hash = None
    if link.hash and link.hash_name:
        try:
            download_hash = hashlib.new(link.hash_name)
        except ValueError:
            logger.warn("Unsupported hash name %s for package %s" % (link.hash_name, link))
    try:
        total_length = int(resp.headers['content-length'])
    except (__HOLE__, KeyError, TypeError):
        total_length = 0
    downloaded = 0
    show_progress = total_length > 40 * 1000 or not total_length
    show_url = link.show_url
    try:
        if show_progress:
            ## FIXME: the URL can get really long in this message:
            if total_length:
                logger.start_progress('Downloading %s (%s): ' % (show_url, format_size(total_length)))
            else:
                logger.start_progress('Downloading %s (unknown size): ' % show_url)
        else:
            logger.notify('Downloading %s' % show_url)
        logger.info('Downloading from URL %s' % link)

        def resp_read(chunk_size):
            try:
                # Special case for urllib3.
                try:
                    for chunk in resp.raw.stream(
                            chunk_size, decode_content=False):
                        yield chunk
                except IncompleteRead as e:
                    raise ChunkedEncodingError(e)
            except AttributeError:
                # Standard file-like object.
                while True:
                    chunk = resp.raw.read(chunk_size)
                    if not chunk:
                        break
                    yield chunk

        for chunk in resp_read(4096):
            downloaded += len(chunk)
            if show_progress:
                if not total_length:
                    logger.show_progress('%s' % format_size(downloaded))
                else:
                    logger.show_progress('%3i%%  %s' % (100 * downloaded / total_length, format_size(downloaded)))
            if download_hash is not None:
                download_hash.update(chunk)
            fp.write(chunk)
        fp.close()
    finally:
        if show_progress:
            logger.end_progress('%s downloaded' % format_size(downloaded))
    return download_hash
dataset/ETHPy150Open GeekTrainer/Flask/Work/Trivia - Module 5/env/Lib/site-packages/pip/download.py/_download_url