def translateDNAtoProtein (dna):
# calculate reverseComplement
# protein = getValidRegionAndEncodeIt(dna)
# proteinR = getValidRegionAndEncodeIt(dnaRC)
# return longest:
#  first solution, works great for basic specification:
#    if len(protein) > len(proteinR):
#        return protein
#    else:
#        return proteinR
#  second solution, works for any list of strings:
#    return max(allProteinsList, key=len)