Python: Download file in chunks with progress bar

import requests
from tqdm import tqdm

def download_file(url, filename):
    with requests.get(url, stream=True) as response:
        response.raise_for_status()
        total_size_in_bytes = int(response.headers.get('content-length', 0))
        block_size = 1024 # 1 Kibibyte
        progress_bar = tqdm(total=total_size_in_bytes, unit='iB', unit_scale=True)
        with open(filename, 'wb') as file:
            for chunk in response.iter_content(chunk_size=block_size):
                progress_bar.update(len(chunk))
                file.write(chunk)
        progress_bar.close()