Creates a hash of a remote file, like a PDF

hash-remote-file.py

import os, hashlib, optparse, requests

def get_remote_sha_sum(url):
    '''put remote file in memory and create hash'''
    response = requests.get(url)

    try:
        response.raise_for_status()
        sha1 = hashlib.sha1()
        response = response.content
        sha1.update(response)
        return sha1.hexdigest()
    except requests.exceptions.HTTPError as e:
        return "Error: " + str(e)

if __name__ == '__main__':
    opt = optparse.OptionParser()
    opt.add_option('--url', '-u', default='https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf')

    options, args = opt.parse_args()
    print get_remote_sha_sum(options.url)