Function download

pysssss.py:191–215

(url, stream, update_callback=None, session=None)

async def download(url, stream, update_callback=None, session=None):
    close_session = False
    if session is None:
        close_session = True
        session = get_http_session()
    try:
        async with session.get(url) as response:
            size = int(response.headers.get('content-length', 0)) or None

            with tqdm(
                unit='B', unit_scale=True, miniters=1, desc=url.split('/')[-1], total=size,
            ) as progressbar:
                perc = 0
                async for chunk in response.content.iter_chunked(2048):
                    stream.write(chunk)
                    progressbar.update(len(chunk))
                    if update_callback is not None and progressbar.total is not None and progressbar.total != 0:
                        last = perc
                        perc = round(progressbar.n / progressbar.total, 2)
                        if perc != last:
                            last = perc
                            await update_callback(perc)
    finally:
        if close_session and session is not None:
            await session.close()


async def download_to_file(url, destination, update_callback=None, is_ext_subpath=True, session=None):