Using python to download files over the internet

download_file.py

import requests
from tqdm import tqdm

def download_file(filename, url):
	chunkSize = 1024
	r = requests.get(url, stream=True)

	with open(filename, 'wb') as f:
		pbar = tqdm( unit="B", total=int(r.headers['Content-Length']) )

		for chunk in r.iter_content(chunk_size=chunkSize): 
			if chunk: # filter out keep-alive new chunks
				pbar.update(len(chunk))

				f.write(chunk)

	return filename