Python make list of dicts unique by a value

Given list of dicts:

[{'id': 1, 'name': 'Sam'}, {'id': 1, 'name': 'Bob'}, {'id': 2, 'name': 'Mark'}, {'id': 2, 'name': 'Jane'}]

Need to turn it into:

[{'id': 1, 'name': 'Sam'}, {'id': 2, 'name': 'Jane'}]

Just take any "record" unique by id. How can i do it in single line ?

>Solution :

Using itertools.groupby, it is assumed that dictionaries with the same id are arranged consecutively:

>>> lst
[{'id': 1, 'name': 'Sam'},
 {'id': 1, 'name': 'Bob'},
 {'id': 2, 'name': 'Mark'},
 {'id': 2, 'name': 'Jane'}]
>>> from itertools import groupby
>>> from operator import itemgetter
>>> [next(mappings) for _, mappings in groupby(lst, key=itemgetter('id'))]
[{'id': 1, 'name': 'Sam'}, {'id': 2, 'name': 'Mark'}]

Or dictionary comprehension:

>>> list({mp['id']: mp for mp in lst}.values())
[{'id': 1, 'name': 'Bob'}, {'id': 2, 'name': 'Jane'}]