Uniquify list of dicts by a key.

snippet.py

"""
I have data like this.

I want to uniquify it based in the url. I have written code that works.
But it just seems gross. Is there a straightforward way to do this that I'm missing?

"""

embed_list = [
	{
		u'provider_url': u'http://twitter.com', 
		u'description': u'PIC: David and Samantha Cameron greet torch bearer Kate Nesbitt from the Royal Navy at 10 Downing St #olympictorch http://t.co/r5517bpB', 
		u'original_url': u'http://twitter.com/Number10gov/status/228538609618264065', 
		u'url': u'http://p.twimg.com/Ayvup5QCIAATPVl.jpg:large', 
		u'title': u'PIC: David and Samantha Cameron greet torch bearer Kate Nesbitt from the Royal Navy at 10 Downing St #olympictorch http://t.co/r5517bpB', 
		u'author_name': u'UK Prime Minister', 
		u'height': 400, 
		u'width': 540, 
		u'thumbnail_url': u'http://p.twimg.com/Ayvup5QCIAATPVl.jpg:thumb', 
		u'thumbnail_width': 150, 
		u'version': u'1.0', 
		u'provider_name': u'Twitter', 
		u'type': u'photo', 
		u'thumbnail_height': 150, 
		u'author_url': u'http://twitter.com/Number10gov'
	},
	{
		u'provider_url': u'http://twitter.com', 
		u'description': u'PIC: David and Samantha Cameron greet torch bearer Kate Nesbitt from the Royal Navy at 10 Downing St #olympictorch http://t.co/r5517bpB', 
		u'original_url': u'http://t.co/r5517bpB', 
		u'url': u'http://p.twimg.com/Ayvup5QCIAATPVl.jpg:large', 
		u'title': u'PIC: David and Samantha Cameron greet torch bearer Kate Nesbitt from the Royal Navy at 10 Downing St #olympictorch http://t.co/r5517bpB', 
		u'author_name': u'UK Prime Minister', 
		u'height': 400, 
		u'width': 540, 
		u'thumbnail_url': u'http://p.twimg.com/Ayvup5QCIAATPVl.jpg:thumb', 
		u'thumbnail_width': 150, 
		u'version': u'1.0', 
		u'provider_name': u'Twitter', 
		u'type': u'photo', 
		u'thumbnail_height': 150, 
		u'author_url': u'http://twitter.com/Number10gov'
	}
]

from itertools import groupby

# yes I know I need to sort this by the key first in order for groupby to consistently work.

embed_list = [list(g)[0] for k, g in groupby(embed_list, lambda x: x['url'])]