freq from string arr

import functools


def getFreq(lst):
    freq = dict()
    def reducer(acc, elem):
        def reducer2(acc2, elem2):
            if elem2 not in freq.keys():
                freq[elem2] = 1
            else:
                freq[elem2] += 1
        functools.reduce(reducer2, elem, None)
    functools.reduce(reducer, lst, None)
    return freq

print(getFreq(['aaa', 'bbb', 'aabbb']))