How can I check if a URL is absolute using Python?

Question

What is the preferred solution for checking if an URL is relative or absolute?

Answer 1

Can't comment accepted answer, so write this comment as new answer: IMO checking scheme in accepted answer ( bool(urlparse.urlparse(url).scheme) ) is not really good idea because of http://example.com/file.jpg, https://example.com/file.jpg and //example.com/file.jpg are absolute urls but in last case we get scheme = ''

I use this code:

is_absolute = True if '//' in my_url else False