Get unique values in List of Lists in python

python list set unique

array = [['a','b'], ['a', 'b','c'], ['a']]result = {x for l in array for x in l}

python list set unique

You can use itertools's chain to flatten your array and then call set on it:

from itertools import chainarray = [['a','b'], ['a', 'b','c'], ['a']]print set(chain(*array))

If you are expecting a list object:

print list(set(chain(*array)))

python list set unique

array = [['a','b'], ['a', 'b','c'], ['a']]unique_values = list(reduce(lambda i, j: set(i) | set(j), array))

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