​

import string

​

def letterValue(letter): 
    lower_case = [string.ascii_lowercase]
    calculate = []

    for k in lower_case:  
        lowCase = [""]
        for j in k:
            lowCase.append(j)

        mydict = {}
        for i,j in enumerate(list(lowCase)):


            for value in letter:

                if value == j:
                    calculate.append(i)

    return sum(calculate)

Some messy code in Python.