Python progress bar and downloads

Question

I have a python script that launches a URL that is a downloadable file. Is there some way to have python use commandline to display the download progress as oppose to launch

Answer 1

Updated for your sample url:

I've just written a super simple (slightly hacky) approach to this for scraping pdfs off a certain site. Note, it only works correctly on unix based systems (linux, mac os) as powershell does not handle "\r"

import requests

link = "http://indy/abcde1245"
file_name = "download.data"
with open(file_name, "wb") as f:
    print "Downloading %s" % file_name
    response = requests.get(link, stream=True)
    total_length = response.headers.get('content-length')

    if total_length is None: # no content length header
        f.write(response.content)
    else:
        dl = 0
        total_length = int(total_length)
        for data in response.iter_content(chunk_size=4096):
            dl += len(data)
            f.write(data)
            done = int(50 * dl / total_length)
            sys.stdout.write("\r[%s%s]" % ('=' * done, ' ' * (50-done)) )    
            sys.stdout.flush()

It uses the requests library so you'll need to install that. This outputs something like the following into your console:

>Downloading download.data

>[=============                            ]

The progress bar is 52 characters wide in the script (2 characters are simply the [] so 50 characters of progress). Each = represents 2% of the download.