python - Get protocol + host name from URL

Question

In my Django app, I need to get the host name from the referrer in request.META.get('HTTP_REFERER') along with its protocol so that from URLs like:

• https://docs.google.com/spreadsheet/ccc?key=blah-blah-blah-blah#gid=1
• https://stackoverflow.com/questions/1234567/blah-blah-blah-blah
• http://www.example.com
• https://www.other-domain.com/whatever/blah/blah/?v1=0&v2=blah+blah ...

I should get:

• https://docs.google.com/
• https://stackoverflow.com/
• http://www.example.com
• https://www.other-domain.com/

I looked over other related questions and found about urlparse, but that didn't do the trick since

>>> urlparse(request.META.get('HTTP_REFERER')).hostname
'docs.google.com'

Answer 1

You should be able to do it with urlparse (docs: python2, python3):

from urllib.parse import urlparse
# from urlparse import urlparse  # Python 2
parsed_uri = urlparse('http://stackoverflow.com/questions/1234567/blah-blah-blah-blah' )
result = '{uri.scheme}://{uri.netloc}/'.format(uri=parsed_uri)
print(result)

# gives
'http://stackoverflow.com/'