write a code using Python that returns the most commonly occurring letter as a fraction of the string e.g. "Non-even" would return 3/7. This is what I have so far, and it returns [2,3,1,1]

import fractions def max_relative frequency (s): Alphabet[ nits: I (s.lower).count(Alphabet[i])) for i in rang(en(Alphabet)) if s.lower().count (Alphabet[il) t- max (hits) for frequency in hits (str(fractions.Fraction(t).limit denominator())) return (hits)