Got to clean up a sloppy list of URLs for API-use? You're welcome.

cleanurls.py

sites = '''
www.google.com
http://www.amazon.com
apple.com
'''.split('\n')[1:-1]

for i, site in enumerate(sites):
    if site[:4].lower() != 'http':
        sites[i] = 'http://%s' % site

import requests
for i, site in enumerate(sites):
    try:
        r = requests.get(site)
        sites[i] = r.url
    except:
        sites[i] = "error: %s" % site