Count Nucleotides

def countNucFrequency(seq):
    tmpFreDict = {"A": 0, "C": 0, "G": 0, "T": 0}
    for nuc in seq:
        tmpFreDict[nuc] += 1
    return tmpFreDict

DNAString = "AGCTTTTCATTCTGACTGCAACGGGCAATATGTCTCTGTGTGGATTAAAAAAAGAGTGTCTGATAGCAGC"
result = countNucFrequency(DNAString)
print(' '.join([str(val) for key, val in result.items()]))
20 12 17 21