How can I unshorten a URL?

Question

I want to be able to take a shortened or non-shortened URL and return its un-shortened form. How can I make a python program to do this?

Additional Clarification:

Answer 1

If you are using Python 3.5+ you can use the Unshortenit module that makes this very easy:

from unshortenit import UnshortenIt
unshortener = UnshortenIt()
uri = unshortener.unshorten('https://href.li/?https://example.com')

Answer 2

Unshorten.me has an api that lets you send a JSON or XML request and get the full URL returned.

Answer 3

You can use geturl()

from urllib.request import urlopen
url = "bit.ly/silly"
unshortened_url = urlopen(url).geturl()
print(unshortened_url)
# google.com