import requests # just a choice of comfort for me
def download(url_address, filename):
    response = requests.get(url_address, stream=True)
    response.raise_for_status()
    with open(filename, "wb") as f:
        total_length = response.headers.get('content-length')
        if total_length is None:
            f.write(response.content)
        else:
            total_length = int(total_length)
            for data in response.iter_content(chunk_size = total_length / 100):
                f.write(data)