Example code for a textual download progress bar.

download_progress.py

#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
DESCRIPTION

    Sample script to show progress of a large file download.

EXAMPLE

    $ python download_progress.py
     71% |#################       | Elapsed Time: 0:00:45 | ETA: 0:00:15 683.9 KiB/s

AUTHOR

    Doug McGeehan <doug.mcgeehan@mst.edu>

HELPFUL SOURCES

    http://pythonhosted.org/progressbar2/examples.html
    http://stackoverflow.com/a/16696317

LICENSE

    Public Domain
"""

# Sorry NASA. I need a big file for demonstration.
URL="http://imgsrc.hubblesite.org/hu/db/images/hs-2005-35-a-full_tif.tif"
SAVE_TO="outputfile.tif"

import requests
from progressbar import ProgressBar
from progressbar import Percentage
from progressbar import Bar
from progressbar import Timer
from progressbar import ETA
from progressbar import AdaptiveTransferSpeed
import zipfile
import re

if __name__ == "__main__":
    downloader = requests.get(URL, stream=True)
    filename = 
    download_size = int(downloader.headers.get('content-length'))
    amount_downloaded = 0

    widgets = [
        Percentage(),
        ' ', Bar(),
        ' ', Timer(),
        ' | ', ETA(),
        ' ', AdaptiveTransferSpeed(),
    ]
    download_progress = ProgressBar(widgets=widgets, max_value=download_size)
    download_progress.start()

    with open(SAVE_TO, "wb") as f:
        for chunk in downloader.iter_content(chunk_size=4098):
            if chunk:
                f.write(chunk)
                f.flush()
                amount_downloaded += len(chunk)
                download_progress.update(amount_downloaded)

    download_progress.finish()

    unzipper = zipfile.ZipFile(SAVE_TO, 'r')
    first_bad_file = unzipper.testzip()
    unzipper.close()

    if first_bad_file is not None:
        os.remove(SAVE_TO)
        sys.exit("The downloaded ZIP has a corrupt file: {0}".format(
            first_bad_file
        ))

    else:
        print("Download successful!")

    # Delete file.
    os.remove(SAVE_TO)