set of dictionaries in python

dicts_set.py

l = [
	{
		'a': 1,
		'b': 1,
	},
	{
		'a': 2,
		'b': 1,
	},
	{
		'a': 3,
		'b': 0,
	},
	{
		'a': 3,
		'b': 2,
	},
]



def dicts_set(dict_list, unique_props):
    unique_identifier = lambda d: tuple([d.get(s) for s in unique_props])
    return list({unique_identifier(d): d for d in dict_list}.values())


print(dict_set(l, ['a',]))