Downloads MSFTFreeEbooks as per Eric Ligman's blog

MSFTFreeEbooksDownloader.py

# Downloads MSFTFreeEbooks as per Eric Ligman's blog
# https://blogs.msdn.microsoft.com/mssmallbiz/2016/07/10/how-to-download-all-of-the-free-ebooks-and-resources-in-my-free-ebooks-giveaway/
# You'll probably want to do a pip install requests first before you can run the script
import os
import sys
import urllib
import requests

def unshorten_url2(url):
    r = requests.head(url, allow_redirects=True)
    return r.url

def download(url):
        full_url = unshorten_url2(url)
        print 'Getting %s' % full_url

        webfile = urllib.urlopen(full_url)

        localfile = open(full_url.split('/')[-1],'w')
        localfile.write(webfile.read())
        
        webfile.close()
        localfile.close()

def main_loop(file_to_read):
    with open(file_to_read) as f:
        next(f) # skip first line
        for line in f:
            download(line)


if __name__ == '__main__':
    if len(sys.argv) == 2:
        try:
            main_loop(sys.argv[1])
        except IOError:
            print 'Filename not found'
    else:
        print 'Usage: %s [path_to_file]' % os.path.basename(sys.argv[0])