Remove duplicate dicts in list having the same values for a given set of keys

util.py

def remove_duplicates_by_keys(arr, keys):
	template = ":".join(["{{{}}}".format(key) for key in keys])
	return list({template.format(**el): el for el in arr}.values())


data = [
     {
        "key1": "A",
        "key2": "B"
    },
		{
        "key1": "A",
        "key2": "B"
    },
		{
        "key1": "AA",
        "key2": "BB"
    }
]

result = remove_duplicates_by_keys(data, ["key1"])
// [{'key1': 'A', 'key2': 'B'}, {'key1': 'AA', 'key2': 'BB'}]